Vulnerability Monitor

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CVE-2025-5262

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.

Published

2025-05-27T13:15:21.980

Last Modified

2025-09-19T17:18:14.170

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

Weaknesses

Type: Secondary
CWE-415

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	thunderbird	< 128.11.0	Yes
Application	mozilla	thunderbird	< 139.0	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1962421 Issue Tracking, Permissions Required ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-45/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-46/ Vendor Advisory ([email protected])