Description
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Published: 2026-10-13
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 14 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

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


Wed, 14 Oct 2026 15:30:00 +0000

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

Wed, 14 Oct 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


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

Type Values Removed Values Added
Description Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
References

Tue, 13 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-269

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

Type Values Removed Values Added
Description Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
Title Privilege escalation in the Application Update component
References

Subscriptions

Mozilla Firefox Thunderbird
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-14T15:55:36.887Z

Reserved: 2026-10-13T00:29:13.930Z

Link: CVE-2026-109704

cve-icon Vulnrichment

Updated: 2026-10-14T10:37:23.514Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T13:17:20.473

Modified: 2026-10-14T16:17:37.183

Link: CVE-2026-109704

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-14T15:15:02Z

Weaknesses
  • CWE-269

    Improper Privilege Management