CVE-2026-109757

Published: Oct 13, 2026Modified: Oct 15, 2026Deferred

8.3

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Exploitability: 1.6 / Impact: 6.0

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

Sandbox escape due to race condition in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

Related CWEs

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

References (5)

https://bugzilla.mozilla.org/show_bug.cgi?id=2069910

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2026-106/

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2026-108/

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2026-109/

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2026-110/

Source: security@mozilla.org

Timeline

No history available yet.