CVE-2025-5262

EUVD-2025-25234
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA-ADPADP
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 26%
Affected Products (NVD)
VendorProductVersion
mozillathunderbird
𝑥
< 128.11.0
mozillathunderbird
𝑥
< 139.0
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firefox
focal
dne
jammy
not-affected
noble
not-affected
oracular
not-affected
plucky
not-affected
thunderbird
focal
dne
jammy
not-affected
noble
not-affected
oracular
not-affected
plucky
not-affected
mozjs38
bionic
not-affected
focal
dne
jammy
dne
noble
dne
oracular
dne
plucky
dne
mozjs52
bionic
ignored
focal
ignored
jammy
dne
noble
dne
oracular
dne
plucky
dne
mozjs68
focal
ignored
jammy
dne
noble
dne
oracular
dne
plucky
dne
mozjs78
focal
dne
jammy
ignored
noble
dne
oracular
dne
plucky
dne
mozjs91
focal
dne
jammy
ignored
noble
dne
oracular
dne
plucky
dne
mozjs102
focal
dne
jammy
ignored
noble
ignored
oracular
dne
plucky
dne
mozjs115
focal
dne
jammy
dne
noble
ignored
oracular
ignored
plucky
ignored
Common Weakness Enumeration
References
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/