CVE-2025-13020

Published: Nov 11, 2025Modified: Jun 17, 2026

8.8

Vector

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

Exploitability: 2.8 / Impact: 5.9

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

Description

Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.

Affected (2)

Products: Mozilla: Firefox

Mozilla

1 product

Firefox

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	Before 145.0
Mozilla Firefox	Before 140.5.0

Related CWEs

CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (5)

https://bugzilla.mozilla.org/show_bug.cgi?id=1995686

Source: security@mozilla.org

Permissions Required

https://www.mozilla.org/security/advisories/mfsa2025-87/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-88/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-90/

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2025-91/

Source: security@mozilla.org

Timeline

No history available yet.