CVE-2025-23016

Published: Jan 10, 2025Modified: Jun 17, 2026Deferred

9.3

Vector

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

Exploitability: 2.5 / Impact: 6.0

Source: MITRE (Secondary)

Description

FastCGI fcgi2 (aka fcgi) 2.x through 2.4.4 has an integer overflow (and resultant heap-based buffer overflow) via crafted nameLen or valueLen values in data to the IPC socket. This occurs in ReadParams in fcgiapp.c.

Related CWEs

CWE-190

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (6)

https://github.com/FastCGI-Archives/fcgi2/issues/67

Source: cve@mitre.org

https://github.com/FastCGI-Archives/fcgi2/releases/tag/2.4.5

Source: cve@mitre.org

https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library

Source: cve@mitre.org

http://www.openwall.com/lists/oss-security/2025/04/23/4

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.debian.org/debian-lts-announce/2025/10/msg00009.html

Source: af854a3a-2127-422b-91ae-364da2661108

https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.