Upstream information

CVE-2026-6786 at MITRE

Description

Memory safety bugs present in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.

SUSE information

Overall state of this security issue: Does not affect SUSE products

No SUSE Bugzilla entries cross referenced.

No SUSE Security Announcements cross referenced.

List of packages in QA

Product(s) Package(s)
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Module for Desktop Applications 15 SP7
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server 15 SP7
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Desktop 15 SP7
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise High Performance Computing 15 SP7
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server 12 SP5-LTSS
  • MozillaFirefox >= 140.10.0-112.310.1
  • MozillaFirefox-devel >= 140.10.0-112.310.1
  • MozillaFirefox-translations-common >= 140.10.0-112.310.1
SUSE Linux Enterprise Server 12 SP5-LTSS
  • MozillaFirefox >= 140.10.0-112.310.1
  • MozillaFirefox-devel >= 140.10.0-112.310.1
  • MozillaFirefox-translations-common >= 140.10.0-112.310.1
SUSE Linux Enterprise Server 15 SP4-LTSS
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server 15 SP4-LTSS
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server 15 SP5-LTSS
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server 15 SP5-LTSS
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server 15 SP6-LTSS
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server 15 SP6-LTSS
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5
  • MozillaFirefox >= 140.10.0-112.310.1
  • MozillaFirefox-devel >= 140.10.0-112.310.1
  • MozillaFirefox-translations-common >= 140.10.0-112.310.1
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • MozillaFirefox >= 140.10.0-150200.152.231.1
  • MozillaFirefox-devel >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-common >= 140.10.0-150200.152.231.1
  • MozillaFirefox-translations-other >= 140.10.0-150200.152.231.1

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 MozillaFirefox In progress
SUSE Linux Enterprise High Performance Computing 15 SP7 MozillaFirefox In progress
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 MozillaFirefox In progress
SUSE Linux Enterprise Server 15 SP7 MozillaFirefox In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP7 MozillaFirefox In progress
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS MozillaFirefox In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS MozillaFirefox In progress
SUSE Linux Enterprise Server 12 SP5-LTSS MozillaFirefox In progress
SUSE Linux Enterprise Server 15 SP4-LTSS MozillaFirefox In progress
SUSE Linux Enterprise Server 15 SP5-LTSS MozillaFirefox In progress
SUSE Linux Enterprise Server 15 SP6-LTSS MozillaFirefox In progress
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 MozillaFirefox In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP6 MozillaFirefox In progress
Products past their end of life and not receiving proactive updates anymore.
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS MozillaFirefox In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS MozillaFirefox In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP4 MozillaFirefox In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP5 MozillaFirefox In progress

SUSE Timeline for this CVE

CVE page created: Tue Apr 21 22:47:02 2026
CVE page last modified: Tue Apr 21 22:47:02 2026