An update for firefox is now available for openEuler-24.03-LTS-SP2 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-1474 Final 1.0 1.0 2026-02-28 Initial 2026-02-28 2026-02-28 openEuler SA Tool V1.0 2026-02-28 firefox security update An update for firefox is now available for openEuler-24.03-LTS-SP2 Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. %if 0 %global moz_debug_prefix /lib/debug %global moz_debug_dir /lib/debug/ %global uname_m %(uname -m) %global symbols_file_name -.en-US.-%(uname.crashreporter-symbols.zip %global symbols_file_path /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip %global _find_debuginfo_opts -p /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip -o debugcrashreporter.list %global crashreporter_pkg_name mozilla-crashreporter--debuginfo Security Fix(es): Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2757) Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2758) Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2759) Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2760) Sandbox escape in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2761) Integer overflow in the JavaScript: Standard Library component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2762) Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2763) JIT miscompilation, use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2764) Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2765) Use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2766) Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2767) Sandbox escape in the Storage: IndexedDB component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2768) A use-after-free vulnerability exists in the Storage: IndexedDB component of Mozilla Firefox, Firefox ESR, and Thunderbird. This vulnerability occurs when the program continues to reference a memory area after it has been freed, which can lead to program crashes, the use of unexpected values, or the execution of arbitrary code. This vulnerability poses a threat to confidentiality, integrity, and availability.(CVE-2026-2769) Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2770) Undefined behavior in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2771) Use-after-free in the Audio/Video: Playback component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2772) Incorrect boundary conditions in the Web Audio component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2773) Integer overflow in the Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2774) Mitigation bypass in the DOM: HTML Parser component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2775) Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2776) Privilege escalation in the Messaging System component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2777) Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2778) Incorrect boundary conditions in the Networking: JAR component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2779) Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2780) Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2781) Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2782) Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2783) Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2784) Invalid pointer in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2785) Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2786) Use-after-free in the DOM: Window and Location component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2787) Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2788) Use-after-free in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2789) Same-origin policy bypass in the Networking: JAR component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2790) Mitigation bypass in the Networking: Cache component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2791) Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2792) Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.(CVE-2026-2793) An update for firefox is now available for master/openEuler-20.03-LTS-SP4/openEuler-22.03-LTS-SP4/openEuler-24.03-LTS/openEuler-24.03-LTS-Next/openEuler-24.03-LTS-SP1/openEuler-24.03-LTS-SP2/openEuler-24.03-LTS-SP3. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High firefox https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2757 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2758 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2759 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2760 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2761 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2762 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2763 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2764 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2765 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2766 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2767 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2768 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2769 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2770 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2771 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2772 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2773 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2774 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2775 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2776 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2777 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2778 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2779 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2780 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2781 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2782 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2783 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2784 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2785 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2786 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2787 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2788 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2789 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2790 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2791 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2792 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-2793 https://nvd.nist.gov/vuln/detail/CVE-2026-2757 https://nvd.nist.gov/vuln/detail/CVE-2026-2758 https://nvd.nist.gov/vuln/detail/CVE-2026-2759 https://nvd.nist.gov/vuln/detail/CVE-2026-2760 https://nvd.nist.gov/vuln/detail/CVE-2026-2761 https://nvd.nist.gov/vuln/detail/CVE-2026-2762 https://nvd.nist.gov/vuln/detail/CVE-2026-2763 https://nvd.nist.gov/vuln/detail/CVE-2026-2764 https://nvd.nist.gov/vuln/detail/CVE-2026-2765 https://nvd.nist.gov/vuln/detail/CVE-2026-2766 https://nvd.nist.gov/vuln/detail/CVE-2026-2767 https://nvd.nist.gov/vuln/detail/CVE-2026-2768 https://nvd.nist.gov/vuln/detail/CVE-2026-2769 https://nvd.nist.gov/vuln/detail/CVE-2026-2770 https://nvd.nist.gov/vuln/detail/CVE-2026-2771 https://nvd.nist.gov/vuln/detail/CVE-2026-2772 https://nvd.nist.gov/vuln/detail/CVE-2026-2773 https://nvd.nist.gov/vuln/detail/CVE-2026-2774 https://nvd.nist.gov/vuln/detail/CVE-2026-2775 https://nvd.nist.gov/vuln/detail/CVE-2026-2776 https://nvd.nist.gov/vuln/detail/CVE-2026-2777 https://nvd.nist.gov/vuln/detail/CVE-2026-2778 https://nvd.nist.gov/vuln/detail/CVE-2026-2779 https://nvd.nist.gov/vuln/detail/CVE-2026-2780 https://nvd.nist.gov/vuln/detail/CVE-2026-2781 https://nvd.nist.gov/vuln/detail/CVE-2026-2782 https://nvd.nist.gov/vuln/detail/CVE-2026-2783 https://nvd.nist.gov/vuln/detail/CVE-2026-2784 https://nvd.nist.gov/vuln/detail/CVE-2026-2785 https://nvd.nist.gov/vuln/detail/CVE-2026-2786 https://nvd.nist.gov/vuln/detail/CVE-2026-2787 https://nvd.nist.gov/vuln/detail/CVE-2026-2788 https://nvd.nist.gov/vuln/detail/CVE-2026-2789 https://nvd.nist.gov/vuln/detail/CVE-2026-2790 https://nvd.nist.gov/vuln/detail/CVE-2026-2791 https://nvd.nist.gov/vuln/detail/CVE-2026-2792 https://nvd.nist.gov/vuln/detail/CVE-2026-2793 openEuler-24.03-LTS-SP2 firefox-140.8.0-1.oe2403sp2.aarch64.rpm firefox-debuginfo-140.8.0-1.oe2403sp2.aarch64.rpm firefox-debugsource-140.8.0-1.oe2403sp2.aarch64.rpm firefox-140.8.0-1.oe2403sp2.src.rpm firefox-140.8.0-1.oe2403sp2.x86_64.rpm firefox-debuginfo-140.8.0-1.oe2403sp2.x86_64.rpm firefox-debugsource-140.8.0-1.oe2403sp2.x86_64.rpm Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2757 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2758 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2759 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2760 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Sandbox escape in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2761 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Integer overflow in the JavaScript: Standard Library component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2762 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2763 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 JIT miscompilation, use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2764 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2765 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2766 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2767 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Sandbox escape in the Storage: IndexedDB component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2768 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 A use-after-free vulnerability exists in the Storage: IndexedDB component of Mozilla Firefox, Firefox ESR, and Thunderbird. This vulnerability occurs when the program continues to reference a memory area after it has been freed, which can lead to program crashes, the use of unexpected values, or the execution of arbitrary code. This vulnerability poses a threat to confidentiality, integrity, and availability. 2026-02-28 CVE-2026-2769 openEuler-24.03-LTS-SP2 High 8.8 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2770 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Undefined behavior in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2771 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Use-after-free in the Audio/Video: Playback component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2772 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Incorrect boundary conditions in the Web Audio component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2773 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Integer overflow in the Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2774 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Mitigation bypass in the DOM: HTML Parser component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2775 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2776 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Privilege escalation in the Messaging System component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2777 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2778 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Incorrect boundary conditions in the Networking: JAR component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2779 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2780 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2781 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2782 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2783 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2784 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Invalid pointer in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2785 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2786 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Use-after-free in the DOM: Window and Location component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2787 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2788 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Use-after-free in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2789 openEuler-24.03-LTS-SP2 Medium 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Same-origin policy bypass in the Networking: JAR component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2790 openEuler-24.03-LTS-SP2 Low 3.4 AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Mitigation bypass in the Networking: Cache component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2791 openEuler-24.03-LTS-SP2 Low 3.4 AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2792 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474 Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. 2026-02-28 CVE-2026-2793 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H firefox security update 2026-02-28 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1474