Description
Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Published: 2026-10-13
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No solution or workaround provided in the CVE record.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4836-1 firefox-esr security update
Debian DSA Debian DSA DSA-6560-1 firefox-esr security update
History

Mon, 19 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Mon, 19 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sat, 17 Oct 2026 10:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
CWE-693

Sat, 17 Oct 2026 07:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Tue, 13 Oct 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Tue, 13 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Description Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Weaknesses CWE-284
References

Tue, 13 Oct 2026 13:00:00 +0000

Type Values Removed Values Added
Description Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
Title Mitigation bypass in the Enterprise Policies component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-19T12:32:55.053Z

Reserved: 2026-10-13T00:48:40.759Z

Link: CVE-2026-109766

cve-icon Vulnrichment

Updated: 2026-10-19T12:32:38.562Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T13:17:27.460

Modified: 2026-10-19T13:16:54.953

Link: CVE-2026-109766

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T18:45:02Z

Weaknesses