CVE-2025-30403

EUVD-2025-21179
A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
facebookCNA
8.1 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
facebookmvfst
2025.3.24.0 ≤
𝑥
< 2025.7.7.0
CNA
References
https://github.com/facebook/mvfst/commit/65b297332191de6e867c4a3139a233fc84c0e7e0
https://www.facebook.com/security/advisories/cve-2025-30403