Description
Privilege escalation in the DOM: UI Events & Focus Handling component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Published: 2026-10-27
Score: 8.8 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-4866-1 firefox-esr security update
Debian DLA Debian DLA DLA-4877-1 thunderbird security update
History

Fri, 06 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 05 Nov 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Tue, 27 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
Description Privilege escalation in the DOM: UI Events & Focus Handling component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, and Thunderbird 159. Privilege escalation in the DOM: UI Events & Focus Handling component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox
References

Tue, 27 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Description Privilege escalation in the DOM: UI Events & Focus Handling component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6. Privilege escalation in the DOM: UI Events & Focus Handling component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, and Thunderbird 159.
References

Tue, 27 Oct 2026 16:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Tue, 27 Oct 2026 14:15:00 +0000

Type Values Removed Values Added
Description Privilege escalation in the DOM: UI Events & Focus Handling component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
Title Privilege escalation in the DOM: UI Events & Focus Handling component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-11-05T16:45:08.629Z

Reserved: 2026-10-27T14:05:53.958Z

Link: CVE-2026-117995

cve-icon Vulnrichment

Updated: 2026-11-05T16:44:52.814Z

cve-icon NVD

Status : Deferred

Published: 2026-10-27T14:16:57.410

Modified: 2026-11-05T17:17:47.727

Link: CVE-2026-117995

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-05T19:45:15Z

Weaknesses