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CVE-2025-30403

Quick assessment

Affected
Facebook mvfst
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

mvfst是Meta开源的一个IETF QUIC协议的客户端和服务器端实现。 mvfst v2025.07.07.00之前版本存在安全漏洞，该漏洞源于QUIC会话中特制消息可能导致堆缓冲区溢出。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-30403

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
mvfst 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mvfst是Meta开源的一个IETF QUIC协议的客户端和服务器端实现。 mvfst v2025.07.07.00之前版本存在安全漏洞，该漏洞源于QUIC会话中特制消息可能导致堆缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Facebook mvfst v2025.03.24.00 ~ v2025.07.07.00 -

II. Public POCs for CVE-2025-30403

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III. Intelligence Information for CVE-2025-30403

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IV. Related Vulnerabilities

Same product: mvfst
Same vendor: Facebook

V. Comments for CVE-2025-30403

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