CVE-2026-109766 Affecting MozillaFirefox-devel package, versions <153.5.0-160000.1.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-SLES1600-MOZILLAFIREFOXDEVEL-21477505
- published23 Oct 2026
- disclosed19 Oct 2026
Introduced: 19 Oct 2026
NewCVE-2026-109766 (opens in a new tab)How to fix?
Upgrade SLES:16.0.0 MozillaFirefox-devel to version 153.5.0-160000.1.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream MozillaFirefox-devel package and not the MozillaFirefox-devel package as distributed by SLES.
See How to fix? for SLES:16.0.0 relevant fixed versions and status.
Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
References
- https://www.suse.com/security/cve/CVE-2026-109766.html
- https://bugzilla.suse.com/1284493
- https://bugzilla.mozilla.org/show_bug.cgi?id=2074406
- https://www.mozilla.org/security/advisories/mfsa2026-106/
- https://www.mozilla.org/security/advisories/mfsa2026-108/
- https://www.mozilla.org/security/advisories/mfsa2026-109/
- https://www.mozilla.org/security/advisories/mfsa2026-110/