CVE-2026-117999

Race condition in the IPC component

Published Oct 27, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
Race condition in the IPC component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

Remediation

No solution or workaround provided in the CVE record

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
Type Values Removed Values Added
Metrics ssvc

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

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'}

Type Values Removed Values Added
Weaknesses CWE-362
Type Values Removed Values Added
Weaknesses CWE-362
CWE-399
Type Values Removed Values Added
Description Race condition in the IPC component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, and Thunderbird 159. Race condition in the IPC component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
References
Type Values Removed Values Added
Description Race condition in the IPC component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6. Race condition in the IPC component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, and Thunderbird 159.
References
Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox
Type Values Removed Values Added
Weaknesses CWE-362
CWE-399
Type Values Removed Values Added
Description Race condition in the IPC component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
Title Race condition in the IPC component
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Nov 5, 2026, 4:46 PM
Reserved
Oct 27, 2026, 2:05 PM
Status
Deferred
Published
Oct 27, 2026, 2:16 PM
Modified
Nov 5, 2026, 5:17 PM