# Security update for MozillaThunderbird

Announcement ID: SUSE-SU-2025:01813-1  
Release Date: 2025-06-04T14:09:26Z  
Rating: important  
References:

  * bsc#1243303

  
Cross-References:

  * CVE-2025-4918
  * CVE-2025-4919

  
CVSS scores:

  * CVE-2025-4918 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-4918 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2025-4918 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2025-4919 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-4919 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2025-4919 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

  
Affected Products:

  * openSUSE Leap 15.6
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7
  * SUSE Linux Enterprise Workstation Extension 15 SP6
  * SUSE Linux Enterprise Workstation Extension 15 SP7
  * SUSE Package Hub 15 15-SP6
  * SUSE Package Hub 15 15-SP7

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for MozillaThunderbird fixes the following issues:

Update to Mozilla Thunderbird 128.10.2 (MFSA 2025-40, bsc#1243303):

Security fixes:

  * CVE-2025-4918: Out-of-bounds access when resolving Promise objects
    (bmo#1966612)
  * CVE-2025-4919: Out-of-bounds access when optimizing linear sums
    (bmo#1966614)

Other fixes:

  * Messages could not be viewed if the profile used a UNC path (bmo#1966256)
  * Visual and UX improvements (bmo#1964156)

## 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 Workstation Extension 15 SP6  
    zypper in -t patch SUSE-SLE-Product-WE-15-SP6-2025-1813=1

  * SUSE Linux Enterprise Workstation Extension 15 SP7  
    zypper in -t patch SUSE-SLE-Product-WE-15-SP7-2025-1813=1

  * openSUSE Leap 15.6  
    zypper in -t patch openSUSE-SLE-15.6-2025-1813=1

  * SUSE Package Hub 15 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP6-2025-1813=1

  * SUSE Package Hub 15 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2025-1813=1

## Package List:

  * SUSE Linux Enterprise Workstation Extension 15 SP6 (x86_64)
    * MozillaThunderbird-128.10.2-150200.8.218.1
    * MozillaThunderbird-debugsource-128.10.2-150200.8.218.1
    * MozillaThunderbird-translations-other-128.10.2-150200.8.218.1
    * MozillaThunderbird-debuginfo-128.10.2-150200.8.218.1
    * MozillaThunderbird-translations-common-128.10.2-150200.8.218.1
  * SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64)
    * MozillaThunderbird-128.10.2-150200.8.218.1
    * MozillaThunderbird-debugsource-128.10.2-150200.8.218.1
    * MozillaThunderbird-translations-other-128.10.2-150200.8.218.1
    * MozillaThunderbird-debuginfo-128.10.2-150200.8.218.1
    * MozillaThunderbird-translations-common-128.10.2-150200.8.218.1
  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    * MozillaThunderbird-128.10.2-150200.8.218.1
    * MozillaThunderbird-debugsource-128.10.2-150200.8.218.1
    * MozillaThunderbird-translations-other-128.10.2-150200.8.218.1
    * MozillaThunderbird-debuginfo-128.10.2-150200.8.218.1
    * MozillaThunderbird-translations-common-128.10.2-150200.8.218.1
  * SUSE Package Hub 15 15-SP6 (aarch64 ppc64le s390x)
    * MozillaThunderbird-128.10.2-150200.8.218.1
    * MozillaThunderbird-debugsource-128.10.2-150200.8.218.1
    * MozillaThunderbird-translations-other-128.10.2-150200.8.218.1
    * MozillaThunderbird-debuginfo-128.10.2-150200.8.218.1
    * MozillaThunderbird-translations-common-128.10.2-150200.8.218.1
  * SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x)
    * MozillaThunderbird-128.10.2-150200.8.218.1
    * MozillaThunderbird-debugsource-128.10.2-150200.8.218.1
    * MozillaThunderbird-translations-other-128.10.2-150200.8.218.1
    * MozillaThunderbird-debuginfo-128.10.2-150200.8.218.1
    * MozillaThunderbird-translations-common-128.10.2-150200.8.218.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-4918.html
  * https://www.suse.com/security/cve/CVE-2025-4919.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1243303