SUSE alert SUSE-SU-2026:1126-1 (firefox)

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OPENSUSE-SECURITY-UPDATES <null@suse.de>
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SUSE-SU-2026:1126-1: important: Security update for MozillaFirefox
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Fri, 27 Mar 2026 20:30:43 -0000
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<177464344387.243.4117884616833591401@1fb0c5c8c07c>
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Article


# Security update for MozillaFirefox

Announcement ID: SUSE-SU-2026:1126-1  
Release Date: 2026-03-27T14:42:48Z  
Rating: important  
References:

  * bsc#1260083

  
Cross-References:

  * CVE-2025-59375
  * CVE-2026-4684
  * CVE-2026-4685
  * CVE-2026-4686
  * CVE-2026-4687
  * CVE-2026-4688
  * CVE-2026-4689
  * CVE-2026-4690
  * CVE-2026-4691
  * CVE-2026-4692
  * CVE-2026-4693
  * CVE-2026-4694
  * CVE-2026-4695
  * CVE-2026-4696
  * CVE-2026-4697
  * CVE-2026-4698
  * CVE-2026-4699
  * CVE-2026-4700
  * CVE-2026-4701
  * CVE-2026-4702
  * CVE-2026-4704
  * CVE-2026-4705
  * CVE-2026-4706
  * CVE-2026-4707
  * CVE-2026-4708
  * CVE-2026-4709
  * CVE-2026-4710
  * CVE-2026-4711
  * CVE-2026-4712
  * CVE-2026-4713
  * CVE-2026-4714
  * CVE-2026-4715
  * CVE-2026-4716
  * CVE-2026-4717
  * CVE-2026-4718
  * CVE-2026-4719
  * CVE-2026-4720
  * CVE-2026-4721

  
CVSS scores:

  * CVE-2025-59375 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-59375 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-59375 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4684 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4684 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4685 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4685 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4685 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4686 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4686 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4686 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4687 ( SUSE ):  8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-4687 ( NVD ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
  * CVE-2026-4687 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-4688 ( SUSE ):  8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-4688 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-4688 ( NVD ):  10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-4689 ( SUSE ):  8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-4689 ( NVD ):  10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-4689 ( NVD ):  10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-4690 ( SUSE ):  8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-4690 ( NVD ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
  * CVE-2026-4690 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-4691 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4691 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4691 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4692 ( SUSE ):  8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-4692 ( NVD ):  10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-4692 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-4693 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4693 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4693 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4694 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4694 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4694 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4695 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4695 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4695 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4696 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4696 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4696 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4697 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4697 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4697 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4698 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4698 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4698 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4699 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4699 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4699 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4700 ( SUSE ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-4700 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4700 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4701 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4701 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4701 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4702 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4702 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4702 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4704 ( SUSE ):  4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2026-4704 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4704 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4705 ( SUSE ):  5.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4705 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4705 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4706 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4706 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4706 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4707 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4707 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4707 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4708 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4708 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4708 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4709 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4709 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4709 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4710 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4710 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4710 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4711 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4711 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4711 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4712 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
  * CVE-2026-4712 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-4712 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-4713 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4713 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4713 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4714 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4714 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4714 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4715 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4715 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-4715 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-4716 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4716 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-4716 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-4717 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4717 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4717 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4718 ( SUSE ):  5.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4718 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
  * CVE-2026-4718 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
  * CVE-2026-4719 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-4719 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4719 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4720 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4720 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4721 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-4721 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/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 38 vulnerabilities can now be installed.

## Description:

This update for MozillaFirefox fixes the following issues:

Update to Firefox 140.9.0 ESR (MFSA 2026-22, bsc#1260083):

  * CVE-2026-4684: Race condition, use-after-free in the Graphics: WebRender
    component
  * CVE-2026-4685: Incorrect boundary conditions in the Graphics: Canvas2D
    component
  * CVE-2026-4686: Incorrect boundary conditions in the Graphics: Canvas2D
    component
  * CVE-2026-4687: Sandbox escape due to incorrect boundary conditions in the
    Telemetry component
  * CVE-2026-4688: Sandbox escape due to use-after-free in the Disability Access
    APIs component
  * CVE-2026-4689: Sandbox escape due to incorrect boundary conditions, integer
    overflow in the XPCOM component
  * CVE-2026-4690: Sandbox escape due to incorrect boundary conditions, integer
    overflow in the XPCOM component
  * CVE-2026-4691: Use-after-free in the CSS Parsing and Computation component
  * CVE-2026-4692: Sandbox escape in the Responsive Design Mode component
  * CVE-2026-4693: Incorrect boundary conditions in the Audio/Video: Playback
    component
  * CVE-2026-4694: Incorrect boundary conditions, integer overflow in the
    Graphics component
  * CVE-2026-4695: Incorrect boundary conditions in the Audio/Video: Web Codecs
    component
  * CVE-2026-4696: Use-after-free in the Layout: Text and Fonts component
  * CVE-2026-4697: Incorrect boundary conditions in the Audio/Video: Web Codecs
    component
  * CVE-2026-4698: JIT miscompilation in the JavaScript Engine: JIT component
  * CVE-2026-4699: Incorrect boundary conditions in the Layout: Text and Fonts
    component
  * CVE-2026-4700: Mitigation bypass in the Networking: HTTP component
  * CVE-2026-4701: Use-after-free in the JavaScript Engine component
  * CVE-2026-4702: JIT miscompilation in the JavaScript Engine component
  * CVE-2026-4704: Denial-of-service in the WebRTC: Signaling component
  * CVE-2026-4705: Undefined behavior in the WebRTC: Signaling component
  * CVE-2026-4706: Incorrect boundary conditions in the Graphics: Canvas2D
    component
  * CVE-2026-4707: Incorrect boundary conditions in the Graphics: Canvas2D
    component
  * CVE-2026-4708: Incorrect boundary conditions in the Graphics component
  * CVE-2026-4709: Incorrect boundary conditions in the Audio/Video: GMP
    component
  * CVE-2026-4710: Incorrect boundary conditions in the Audio/Video component
  * CVE-2026-4711: Use-after-free in the Widget: Cocoa component
  * CVE-2026-4712: Information disclosure in the Widget: Cocoa component
  * CVE-2026-4713: Incorrect boundary conditions in the Graphics component
  * CVE-2026-4714: Incorrect boundary conditions in the Audio/Video component
  * CVE-2026-4715: Uninitialized memory in the Graphics: Canvas2D component
  * CVE-2026-4716: Incorrect boundary conditions, uninitialized memory in the
    JavaScript Engine component
  * CVE-2026-4717: Privilege escalation in the Netmonitor component
  * CVE-2025-59375: Denial-of-service in the XML component
  * CVE-2026-4718: Undefined behavior in the WebRTC: Signaling component
  * CVE-2026-4719: Incorrect boundary conditions in the Graphics: Text component
  * CVE-2026-4720: Memory safety bugs fixed in Firefox ESR 140.9, Thunderbird
    ESR 140.9, Firefox 149 and Thunderbird 149
  * CVE-2026-4721: Memory safety bugs fixed in Firefox ESR 115.34, Firefox ESR
    140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149

## 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-15.6-2026-1126=1

  * Desktop Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Desktop-Applications-15-SP7-2026-1126=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-1126=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-1126=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1126=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1126=1

  * SUSE Linux Enterprise Server 15 SP4 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-1126=1

  * SUSE Linux Enterprise Server 15 SP5 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1126=1

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-1126=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP4  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-1126=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP5  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1126=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-1126=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-branding-upstream-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * openSUSE Leap 15.6 (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * Desktop Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * Desktop Applications Module 15-SP7 (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
    x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
    x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
    x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64
    x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
    * MozillaFirefox-debuginfo-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-other-140.9.0-150200.152.225.1
    * MozillaFirefox-140.9.0-150200.152.225.1
    * MozillaFirefox-translations-common-140.9.0-150200.152.225.1
    * MozillaFirefox-debugsource-140.9.0-150200.152.225.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch)
    * MozillaFirefox-devel-140.9.0-150200.152.225.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-59375.html
  * https://www.suse.com/security/cve/CVE-2026-4684.html
  * https://www.suse.com/security/cve/CVE-2026-4685.html
  * https://www.suse.com/security/cve/CVE-2026-4686.html
  * https://www.suse.com/security/cve/CVE-2026-4687.html
  * https://www.suse.com/security/cve/CVE-2026-4688.html
  * https://www.suse.com/security/cve/CVE-2026-4689.html
  * https://www.suse.com/security/cve/CVE-2026-4690.html
  * https://www.suse.com/security/cve/CVE-2026-4691.html
  * https://www.suse.com/security/cve/CVE-2026-4692.html
  * https://www.suse.com/security/cve/CVE-2026-4693.html
  * https://www.suse.com/security/cve/CVE-2026-4694.html
  * https://www.suse.com/security/cve/CVE-2026-4695.html
  * https://www.suse.com/security/cve/CVE-2026-4696.html
  * https://www.suse.com/security/cve/CVE-2026-4697.html
  * https://www.suse.com/security/cve/CVE-2026-4698.html
  * https://www.suse.com/security/cve/CVE-2026-4699.html
  * https://www.suse.com/security/cve/CVE-2026-4700.html
  * https://www.suse.com/security/cve/CVE-2026-4701.html
  * https://www.suse.com/security/cve/CVE-2026-4702.html
  * https://www.suse.com/security/cve/CVE-2026-4704.html
  * https://www.suse.com/security/cve/CVE-2026-4705.html
  * https://www.suse.com/security/cve/CVE-2026-4706.html
  * https://www.suse.com/security/cve/CVE-2026-4707.html
  * https://www.suse.com/security/cve/CVE-2026-4708.html
  * https://www.suse.com/security/cve/CVE-2026-4709.html
  * https://www.suse.com/security/cve/CVE-2026-4710.html
  * https://www.suse.com/security/cve/CVE-2026-4711.html
  * https://www.suse.com/security/cve/CVE-2026-4712.html
  * https://www.suse.com/security/cve/CVE-2026-4713.html
  * https://www.suse.com/security/cve/CVE-2026-4714.html
  * https://www.suse.com/security/cve/CVE-2026-4715.html
  * https://www.suse.com/security/cve/CVE-2026-4716.html
  * https://www.suse.com/security/cve/CVE-2026-4717.html
  * https://www.suse.com/security/cve/CVE-2026-4718.html
  * https://www.suse.com/security/cve/CVE-2026-4719.html
  * https://www.suse.com/security/cve/CVE-2026-4720.html
  * https://www.suse.com/security/cve/CVE-2026-4721.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1260083



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