CVE-2025-30403 is a high-severity heap-buffer-overflow vulnerability in mvfst versions prior to v2025.07.07.00, allowing an unauthenticated attacker to trigger the flaw via a specially crafted message during a QUIC session. This vulnerability has a CVSS score of 8.1, indicating a high potential for impact, specifically compromising confidentiality and availability. While the attack complexity is low, user interaction is required for successful exploitation. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= v2025.03.24.00, < v2025.07.07.00CPE match | cpe:2.3:a:facebook:mvfst:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.
Remediation records are not available for this CVE.