CVE-2025-30403 — HIGH (8.1)

Vulnerability 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.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

HIGH

References

FAQ

What is CVE-2025-30403?

CVE-2025-30403 is a vulnerability with a CVSS score of 8.1 (HIGH). 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.

How severe is CVE-2025-30403?

CVE-2025-30403 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-30403?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.