ESB-2026.4451 — Vulnetix

ESB-2026.4451 PUBLISHED CVSS 9.800000190734863 CRITICAL

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4451 Security update for MozillaFirefox 30 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: MozillaFirefox Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-6746 CVE-2026-6747 CVE-2026-6748 CVE-2026-6749 CVE-2026-6750 CVE-2026-6751 CVE-2026-6752 CVE-2026-6753 CVE-2026-6754 CVE-2026-6757 CVE-2026-6759 CVE-2026-6761 CVE-2026-6762 CVE-2026-6763 CVE-2026-6764 CVE-2026-6765 CVE-2026-6766 CVE-2026-6767 CVE-2026-6769 CVE-2026-6770 CVE-2026-6771 CVE-2026-6772 CVE-2026-6776 CVE-2026-6785 CVE-2026-6786 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261649-1 Comment: CVSS (Max): 9.8 CVE-2026-6771 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) CVSS Source: CISA-ADP Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H EPSS (Max): 0.1% (21st) CVE-2026-6785 2026-04-28 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for MozillaFirefox Announcement ID: SUSE-SU-2026:1649-1 Release Date: 2026-04-28T18:52:37Z Rating: important References: o bsc#1262230 o CVE-2026-6746 o CVE-2026-6747 o CVE-2026-6748 o CVE-2026-6749 o CVE-2026-6750 o CVE-2026-6751 o CVE-2026-6752 o CVE-2026-6753 o CVE-2026-6754 o CVE-2026-6757 o CVE-2026-6759 o CVE-2026-6761 Cross-References: o CVE-2026-6762 o CVE-2026-6763 o CVE-2026-6764 o CVE-2026-6765 o CVE-2026-6766 o CVE-2026-6767 o CVE-2026-6769 o CVE-2026-6770 o CVE-2026-6771 o CVE-2026-6772 o CVE-2026-6776 o CVE-2026-6785 o CVE-2026-6786 o CVE-2026-6746 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-6747 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-6748 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-6749 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:H/I:N/A:N o CVE-2026-6750 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/ S:U/C:H/I:H/A:H o CVE-2026-6751 ( NVD ): 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:L/I:L/A:L o CVE-2026-6752 ( NVD ): 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:L/I:L/A:L o CVE-2026-6753 ( NVD ): 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:L/I:L/A:L o CVE-2026-6754 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-6757 ( NVD ): 6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/ S:U/C:L/I:L/A:L o CVE-2026-6759 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-6761 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/ S:U/C:H/I:H/A:H o CVE-2026-6762 ( NVD ): 6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/ CVSS scores: S:U/C:L/I:L/A:L o CVE-2026-6763 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:L/I:L/A:N o CVE-2026-6764 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:L/A:L o CVE-2026-6765 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:L/I:N/A:N o CVE-2026-6766 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:H/I:N/A:N o CVE-2026-6767 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:L/I:N/A:N o CVE-2026-6769 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/ S:U/C:H/I:H/A:H o CVE-2026-6770 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:L/I:N/A:L o CVE-2026-6771 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-6772 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:H/I:N/A:N o CVE-2026-6776 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/ S:U/C:H/I:H/A:H o CVE-2026-6785 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-6786 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:H/I:H/A:H o Desktop Applications Module 15-SP7 o SUSE Linux Enterprise Desktop 15 SP7 o SUSE Linux Enterprise High Performance Computing 15 SP4 o SUSE Linux Enterprise High Performance Computing 15 SP5 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 o SUSE Linux Enterprise High Performance Computing LTSS 15 Affected SP5 Products: o SUSE Linux Enterprise Real Time 15 SP7 o SUSE Linux Enterprise Server 15 SP4 o SUSE Linux Enterprise Server 15 SP4 LTSS o SUSE Linux Enterprise Server 15 SP5 o SUSE Linux Enterprise Server 15 SP5 LTSS o SUSE Linux Enterprise Server 15 SP6 o SUSE Linux Enterprise Server 15 SP6 LTSS o SUSE Linux Enterprise Server 15 SP7 o SUSE Linux Enterprise Server for SAP Applications 15 SP4 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 o SUSE Linux Enterprise Server for SAP Applications 15 SP7 An update that solves 25 vulnerabilities can now be installed. Description: This update for MozillaFirefox fixes the following issue: Update to Firefox Extended Support Release 140.10.0 ESR (bsc#1262230, MFSA 2026-32): o CVE-2026-6746: Use-after-free in the DOM: Core & HTML component. o CVE-2026-6747: Use-after-free in the WebRTC component. o CVE-2026-6748: Uninitialized memory in the Audio/Video: Web Codecs component. o CVE-2026-6749: Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. o CVE-2026-6750: Privilege escalation in the Graphics: WebRender component. o CVE-2026-6751: Uninitialized memory in the Audio/Video: Web Codecs component. o CVE-2026-6752: Incorrect boundary conditions in the WebRTC component. o CVE-2026-6753: Incorrect boundary conditions in the WebRTC component. o CVE-2026-6754: Use-after-free in the JavaScript Engine component. o CVE-2026-6757: Invalid pointer in the JavaScript: WebAssembly component. o CVE-2026-6759: Use-after-free in the Widget: Cocoa component. o CVE-2026-6761: Privilege escalation in the Networking component. o CVE-2026-6762: Spoofing issue in the DOM: Core & HTML component. o CVE-2026-6763: Mitigation bypass in the File Handling component. o CVE-2026-6764: Incorrect boundary conditions in the DOM: Device Interfaces component. o CVE-2026-6765: Information disclosure in the Form Autofill component. o CVE-2026-6766: Incorrect boundary conditions in the Libraries component in NSS. o CVE-2026-6767: Other issue in the Libraries component in NSS. o CVE-2026-6769: Privilege escalation in the Debugger component. o CVE-2026-6770: Other issue in the Storage: IndexedDB component. o CVE-2026-6771: Mitigation bypass in the DOM: Security component. o CVE-2026-6772: Incorrect boundary conditions in the Libraries component in NSS. o CVE-2026-6776: Incorrect boundary conditions in the WebRTC: Networking component. o CVE-2026-6785: Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150. o CVE-2026-6786: Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: o SUSE Linux Enterprise Server for SAP Applications 15 SP6 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-1649=1 o Desktop Applications Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Desktop-Applications-15-SP7-2026-1649=1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-1649=1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-1649=1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1649=1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1649=1 o SUSE Linux Enterprise Server 15 SP4 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-1649=1 o SUSE Linux Enterprise Server 15 SP5 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1649=1 o SUSE Linux Enterprise Server 15 SP6 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-1649=1 o SUSE Linux Enterprise Server for SAP Applications 15 SP4 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-1649=1 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1649=1 Package List: o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 o Desktop Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o Desktop Applications Module 15-SP7 (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server 15 SP4 LTSS (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server 15 SP5 LTSS (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64) MozillaFirefox-translations-other-140.10.0-150200.152.231.1 MozillaFirefox-140.10.0-150200.152.231.1 MozillaFirefox-debugsource-140.10.0-150200.152.231.1 MozillaFirefox-translations-common-140.10.0-150200.152.231.1 MozillaFirefox-debuginfo-140.10.0-150200.152.231.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch) MozillaFirefox-devel-140.10.0-150200.152.231.1 References: o https://www.suse.com/security/cve/CVE-2026-6746.html o https://www.suse.com/security/cve/CVE-2026-6747.html o https://www.suse.com/security/cve/CVE-2026-6748.html o https://www.suse.com/security/cve/CVE-2026-6749.html o https://www.suse.com/security/cve/CVE-2026-6750.html o https://www.suse.com/security/cve/CVE-2026-6751.html o https://www.suse.com/security/cve/CVE-2026-6752.html o https://www.suse.com/security/cve/CVE-2026-6753.html o https://www.suse.com/security/cve/CVE-2026-6754.html o https://www.suse.com/security/cve/CVE-2026-6757.html o https://www.suse.com/security/cve/CVE-2026-6759.html o https://www.suse.com/security/cve/CVE-2026-6761.html o https://www.suse.com/security/cve/CVE-2026-6762.html o https://www.suse.com/security/cve/CVE-2026-6763.html o https://www.suse.com/security/cve/CVE-2026-6764.html o https://www.suse.com/security/cve/CVE-2026-6765.html o https://www.suse.com/security/cve/CVE-2026-6766.html o https://www.suse.com/security/cve/CVE-2026-6767.html o https://www.suse.com/security/cve/CVE-2026-6769.html o https://www.suse.com/security/cve/CVE-2026-6770.html o https://www.suse.com/security/cve/CVE-2026-6771.html o https://www.suse.com/security/cve/CVE-2026-6772.html o https://www.suse.com/security/cve/CVE-2026-6776.html o https://www.suse.com/security/cve/CVE-2026-6785.html o https://www.suse.com/security/cve/CVE-2026-6786.html o https://bugzilla.suse.com/show_bug.cgi?id=1262230 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of 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Risk Scores

CVSS v3.1

9.800000190734863

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions
SUSE	MozillaFirefox

Timeline

Apr 30, 2026 CVE Published

References

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