Security update for MozillaFirefox

Announcement ID:	SUSE-SU-2026:0260-1
Release Date:	2026-01-22T16:12:21Z
Rating:	important
References:	bsc#1256340
Cross-References:	CVE-2025-14327 CVE-2026-0877 CVE-2026-0878 CVE-2026-0879 CVE-2026-0880 CVE-2026-0882 CVE-2026-0883 CVE-2026-0884 CVE-2026-0885 CVE-2026-0886 CVE-2026-0887 CVE-2026-0890 CVE-2026-0891
CVSS scores:	CVE-2025-14327 ( SUSE ): 5.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVE-2025-14327 ( SUSE ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVE-2025-14327 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVE-2025-14327 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVE-2026-0877 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N CVE-2026-0878 ( NVD ): 8.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N CVE-2026-0879 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-0880 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-0882 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-0883 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVE-2026-0884 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-0885 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVE-2026-0886 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVE-2026-0887 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVE-2026-0890 ( NVD ): 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L CVE-2026-0891 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products:	Desktop Applications Module 15-SP7 openSUSE Leap 15.6 SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise High Performance Computing 15 SP5 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 SUSE Linux Enterprise Real Time 15 SP7 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server 15 SP4 LTSS SUSE Linux Enterprise Server 15 SP5 SUSE Linux Enterprise Server 15 SP5 LTSS SUSE Linux Enterprise Server 15 SP6 SUSE Linux Enterprise Server 15 SP6 LTSS SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP5 SUSE Linux Enterprise Server for SAP Applications 15 SP6 SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves 13 vulnerabilities can now be installed.

Description:

This update for MozillaFirefox fixes the following issues:

Update to Firefox Extended Support Release 140.7.0 ESR (bsc#1256340).

• MFSA 2026-03
• CVE-2026-0877: Mitigation bypass in the DOM: Security component
• CVE-2026-0878: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
• CVE-2026-0879: Sandbox escape due to incorrect boundary conditions in the Graphics component
• CVE-2026-0880: Sandbox escape due to integer overflow in the Graphics component
• CVE-2026-0882: Use-after-free in the IPC component
• CVE-2025-14327: Spoofing issue in the Downloads Panel component
• CVE-2026-0883: Information disclosure in the Networking component
• CVE-2026-0884: Use-after-free in the JavaScript Engine component
• CVE-2026-0885: Use-after-free in the JavaScript: GC component
• CVE-2026-0886: Incorrect boundary conditions in the Graphics component
• CVE-2026-0887: Clickjacking issue, information disclosure in the PDF Viewer component
• CVE-2026-0890: Spoofing issue in the DOM: Copy-Paste and Drag-Drop component
• CVE-2026-0891: Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147

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:

• openSUSE Leap 15.6
  zypper in -t patch openSUSE-SLE-15.6-2026-260=1
• Desktop Applications Module 15-SP7
  zypper in -t patch SUSE-SLE-Module-Desktop-Applications-15-SP7-2026-260=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-260=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-260=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-260=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-260=1
• SUSE Linux Enterprise Server 15 SP4 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-260=1
• SUSE Linux Enterprise Server 15 SP5 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-260=1
• SUSE Linux Enterprise Server 15 SP6 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-260=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-260=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-260=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP6
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-260=1

Package List:

• openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-branding-upstream-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• openSUSE Leap 15.6 (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• Desktop Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• Desktop Applications Module 15-SP7 (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server 15 SP4 LTSS (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
  • MozillaFirefox-translations-other-140.7.0-150200.152.216.1
  • MozillaFirefox-debugsource-140.7.0-150200.152.216.1
  • MozillaFirefox-translations-common-140.7.0-150200.152.216.1
  • MozillaFirefox-140.7.0-150200.152.216.1
  • MozillaFirefox-debuginfo-140.7.0-150200.152.216.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch)
  • MozillaFirefox-devel-140.7.0-150200.152.216.1

References:

• https://www.suse.com/security/cve/CVE-2025-14327.html
• https://www.suse.com/security/cve/CVE-2026-0877.html
• https://www.suse.com/security/cve/CVE-2026-0878.html
• https://www.suse.com/security/cve/CVE-2026-0879.html
• https://www.suse.com/security/cve/CVE-2026-0880.html
• https://www.suse.com/security/cve/CVE-2026-0882.html
• https://www.suse.com/security/cve/CVE-2026-0883.html
• https://www.suse.com/security/cve/CVE-2026-0884.html
• https://www.suse.com/security/cve/CVE-2026-0885.html
• https://www.suse.com/security/cve/CVE-2026-0886.html
• https://www.suse.com/security/cve/CVE-2026-0887.html
• https://www.suse.com/security/cve/CVE-2026-0890.html
• https://www.suse.com/security/cve/CVE-2026-0891.html
• https://bugzilla.suse.com/show_bug.cgi?id=1256340