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.
Scores
CVSS v3
7.5
EPSS
0.0038
EPSS Percentile
59.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-415
Status
published
Products (2)
mozilla/thunderbird
< 128.11.0
mozilla/thunderbird
< 139.0
Published
May 27, 2025
Tracked Since
Feb 18, 2026