CVE-2025-5262
VP8 WebRTC Double-Free Vulnerability
Description
A double-free could have occurred in `vpx_codec_enc_init_multi` after a failed allocation when initializing the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 139 and Thunderbird < 128.11.
INFO
Published Date :
May 27, 2025, 1:15 p.m.
Last Modified :
Aug. 20, 2025, 2:40 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-5262
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
Solution
- Update the software to the latest version.
- Apply security patches provided by the vendor.
- Recompile the software with updated libraries.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-5262.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1962421 | |
| https://www.mozilla.org/security/advisories/mfsa2025-45/ | |
| https://www.mozilla.org/security/advisories/mfsa2025-46/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-5262 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-5262
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-5262 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-5262 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 25, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-415 -
CVE Modified by [email protected]
Aug. 19, 2025
Action Type Old Value New Value Changed Description Rejected reason: This CVE was accidentally assigned by Mozilla but should be assigned by another CNA. When the correct CVE is available, Mozilla's advisories will be updated to reflect that identifier. A double-free could have occurred in `vpx_codec_enc_init_multi` after a failed allocation when initializing the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 139 and Thunderbird < 128.11. Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1962421 Added Reference https://www.mozilla.org/security/advisories/mfsa2025-45/ Added Reference https://www.mozilla.org/security/advisories/mfsa2025-46/ -
CVE Unrejected by [email protected]
Aug. 19, 2025
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 27, 2025
Action Type Old Value New Value Changed Description A double-free could have occurred in `vpx_codec_enc_init_multi` after a failed allocation when initializing the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, and Firefox ESR < 128.11. Rejected reason: This CVE was accidentally assigned by Mozilla but should be assigned by another CNA. When the correct CVE is available, Mozilla's advisories will be updated to reflect that identifier. Removed CVSS V3.1 CISA-ADP: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Removed CWE CISA-ADP: CWE-415 Removed Reference Mozilla Corporation: https://bugzilla.mozilla.org/show_bug.cgi?id=1962421 Removed Reference Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-42/ Removed Reference Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-43/ Removed Reference Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-44/ -
CVE Rejected by [email protected]
May. 27, 2025
Action Type Old Value New Value -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 27, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-415 -
New CVE Received by [email protected]
May. 27, 2025
Action Type Old Value New Value Added Description A double-free could have occurred in `vpx_codec_enc_init_multi` after a failed allocation when initializing the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, and Firefox ESR < 128.11. Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1962421 Added Reference https://www.mozilla.org/security/advisories/mfsa2025-42/ Added Reference https://www.mozilla.org/security/advisories/mfsa2025-43/ Added Reference https://www.mozilla.org/security/advisories/mfsa2025-44/