SUSE-SU-2026:0122-1: important: Security update for MozillaFirefox

SLE-SECURITY-UPDATES null at suse.de
Wed Jan 14 16:30:05 UTC 2026 


# Security update for MozillaFirefox

Announcement ID: SUSE-SU-2026:0122-1  
Release Date: 2026-01-14T08:49:27Z  
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 ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-0890 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
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:

  * SUSE Linux Enterprise Server 12 SP5 LTSS  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-122=1

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-122=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * MozillaFirefox-140.7.0-112.295.1
    * MozillaFirefox-debuginfo-140.7.0-112.295.1
    * MozillaFirefox-translations-common-140.7.0-112.295.1
    * MozillaFirefox-debugsource-140.7.0-112.295.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS (noarch)
    * MozillaFirefox-devel-140.7.0-112.295.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * MozillaFirefox-140.7.0-112.295.1
    * MozillaFirefox-debuginfo-140.7.0-112.295.1
    * MozillaFirefox-translations-common-140.7.0-112.295.1
    * MozillaFirefox-debugsource-140.7.0-112.295.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (noarch)
    * MozillaFirefox-devel-140.7.0-112.295.1

## 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

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