An update for firefox is now available for openEuler-24.03-LTS-SP1 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-2133 Final 1.0 1.0 2026-05-03 Initial 2026-05-03 2026-05-03 openEuler SA Tool V1.0 2026-05-03 firefox security update An update for firefox is now available for openEuler-24.03-LTS-SP1 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): Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.(CVE-2026-7320) Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1.(CVE-2026-7321) Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.(CVE-2026-7322) Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.(CVE-2026-7323) 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-SP3/openEuler-24.03-LTS-SP4/openEuler-24.03-LTS-SP2. openEuler Security has rated this update as having a security impact of critical. 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. Critical firefox https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2133 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-7320 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-7321 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-7322 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-7323 https://nvd.nist.gov/vuln/detail/CVE-2026-7320 https://nvd.nist.gov/vuln/detail/CVE-2026-7321 https://nvd.nist.gov/vuln/detail/CVE-2026-7322 https://nvd.nist.gov/vuln/detail/CVE-2026-7323 openEuler-24.03-LTS-SP1 firefox-140.10.1-1.oe2403sp1.aarch64.rpm firefox-debuginfo-140.10.1-1.oe2403sp1.aarch64.rpm firefox-debugsource-140.10.1-1.oe2403sp1.aarch64.rpm firefox-140.10.1-1.oe2403sp1.src.rpm firefox-140.10.1-1.oe2403sp1.x86_64.rpm firefox-debuginfo-140.10.1-1.oe2403sp1.x86_64.rpm firefox-debugsource-140.10.1-1.oe2403sp1.x86_64.rpm Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. 2026-05-03 CVE-2026-7320 openEuler-24.03-LTS-SP1 High 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N firefox security update 2026-05-03 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2133 Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1. 2026-05-03 CVE-2026-7321 openEuler-24.03-LTS-SP1 Critical 9.6 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H firefox security update 2026-05-03 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2133 Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. 2026-05-03 CVE-2026-7322 openEuler-24.03-LTS-SP1 High 7.3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L firefox security update 2026-05-03 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2133 Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. 2026-05-03 CVE-2026-7323 openEuler-24.03-LTS-SP1 High 7.3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L firefox security update 2026-05-03 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2133