SUSE-SU-2026:21541-1: important: Security update for MozillaFirefox

[SLE-SECURITY-UPDATES]

# Security update for MozillaFirefox

Announcement ID: SUSE-SU-2026:21541-1  
Release Date: 2026-05-04T10:46:30Z  
Rating: important  
References:

  * bsc#1263110

  
Cross-References:

  * CVE-2026-7320
  * CVE-2026-7321
  * CVE-2026-7322
  * CVE-2026-7323

  
CVSS scores:

  * CVE-2026-7320 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-7321 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-7322 ( NVD ):  7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-7323 ( NVD ):  7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves four vulnerabilities can now be installed.

## Description:

This update for MozillaFirefox fixes the following issues:

Update to Firefox Extended Support Release 140.10.1 ESR.

  * MFSA 2026-36 (bsc#1263110)
  * CVE-2026-7320: Information disclosure due to incorrect boundary conditions
    in the Audio/Video component.
  * CVE-2026-7321: Sandbox escape due to incorrect boundary conditions in the
    WebRTC: Networking component.
  * CVE-2026-7322: Memory safety bugs fixed in Firefox ESR 115.35.1, Firefox ESR
    140.10.1, Thunderbird ESR 140.10.1, Firefox 150.0.1 and Thunderbird 150.0.1
  * CVE-2026-7323: Memory safety bugs fixed in Firefox ESR 140.10.1, Thunderbird
    ESR 140.10.1, Firefox 150.0.1 and Thunderbird 150.0.1

## 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 for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-669=1

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-669=1

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * MozillaFirefox-translations-other-140.10.1-160000.1.1
    * MozillaFirefox-debuginfo-140.10.1-160000.1.1
    * MozillaFirefox-debugsource-140.10.1-160000.1.1
    * MozillaFirefox-140.10.1-160000.1.1
    * MozillaFirefox-translations-common-140.10.1-160000.1.1
  * SUSE Linux Enterprise Server for SAP applications 16.0 (noarch)
    * MozillaFirefox-devel-140.10.1-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le x86_64)
    * MozillaFirefox-translations-other-140.10.1-160000.1.1
    * MozillaFirefox-debuginfo-140.10.1-160000.1.1
    * MozillaFirefox-debugsource-140.10.1-160000.1.1
    * MozillaFirefox-140.10.1-160000.1.1
    * MozillaFirefox-translations-common-140.10.1-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (noarch)
    * MozillaFirefox-devel-140.10.1-160000.1.1
    * MozillaFirefox-devel-140.10.1-160000.1.3
  * SUSE Linux Enterprise Server 16.0 (s390x)
    * MozillaFirefox-debugsource-140.10.1-160000.1.3
    * MozillaFirefox-140.10.1-160000.1.3
    * MozillaFirefox-translations-common-140.10.1-160000.1.3
    * MozillaFirefox-translations-other-140.10.1-160000.1.3
    * MozillaFirefox-debuginfo-140.10.1-160000.1.3

## References:

  * https://www.suse.com/security/cve/CVE-2026-7320.html
  * https://www.suse.com/security/cve/CVE-2026-7321.html
  * https://www.suse.com/security/cve/CVE-2026-7322.html
  * https://www.suse.com/security/cve/CVE-2026-7323.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1263110

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