7.5
High
CVE-2025-5262 A double-free could have occurred in `vpx_codec_enc_init_multi` after a failed allocation when initializing the…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Thunderbird 128.11 | earliest → < 128.11 | 128.11 |
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