CVE Tools
Sign in

CVE-2025-30403

Published: Jul 11, 2025Updated: Jul 15, 2025 Sources: CVE List NVD
NVD MITRE
8.1CVSSHIGH
EPSS Score
0.3%
Top 79.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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 Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Affected Products

mvfstFacebookCommunications
facebookcommercialUSCommunicationsaka meta, facebook inc.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

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

Timeline

Published
Jul 11, 2025
Last Updated
Jul 15, 2025

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2025-30403 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows