CVE-2025-13020
Unknown Unknown - Not Provided
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Publication date: 2025-11-11

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

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.
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Meta Information
Published
2025-11-11
Last Modified
2026-04-13
Generated
2026-06-16
AI Q&A
2025-11-11
EPSS Evaluated
2026-06-15
NVD
CVE-2025-13020
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 140.5.0 (exc)
mozilla firefox to 145.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-416 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

This vulnerability is a use-after-free issue in the WebRTC Audio/Video component of Firefox browsers. It affects versions of Firefox earlier than 145 and Firefox ESR earlier than 140.5. A use-after-free vulnerability occurs when a program continues to use memory after it has been freed, which can lead to crashes or potentially allow an attacker to execute arbitrary code.

Impact Analysis

This vulnerability can impact you by potentially allowing attackers to exploit the use-after-free condition in the WebRTC Audio/Video component, which could lead to application crashes or remote code execution. This could compromise the security and stability of your Firefox browser.

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