Information disclosure, privilege escalation in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
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
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 13 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-269

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

Type Values Removed Values Added
Description Information disclosure, privilege escalation in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. Information disclosure, privilege escalation in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
References

Tue, 13 Oct 2026 16:45:00 +0000

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

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

Type Values Removed Values Added
Weaknesses CWE-269

Tue, 13 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
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'}

ssvc

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


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

Type Values Removed Values Added
Description Information disclosure, privilege escalation in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
Title Information disclosure, privilege escalation in the Security: Process Sandboxing component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-14T03:59:07.648Z

Reserved: 2026-10-13T00:29:18.217Z

Link: CVE-2026-109709

cve-icon Vulnrichment

Updated: 2026-10-13T14:58:05.278Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T13:17:21.020

Modified: 2026-10-14T04:18:16.497

Link: CVE-2026-109709

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T07:00:04Z

Weaknesses