CVE-2025-30403

State: Published
Severity: 8.1 High
Published: Jul 11, 2025
Updated: Jul 11, 2025
Reserved: Mar 21, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
mvfstFacebook	v2025.03.24.00 to before v2025.07.07.00Affected

References

https://www.facebook.com/security/advisories/cve-2025-30403
https://github.com/facebook/mvfst/commit/65b297332191de6e867c4a3139a233fc84c0e7e0

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