CVEvulnerability
CVE-2025-40907
5.3 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2025-05-16
- Last modified
- 2026-06-17
- Assigner
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-122, CWE-190
Description
FCGI versions 0.44 through 0.82, for Perl, include a vulnerable version of the FastCGI fcgi2 (aka fcgi) library.
The included FastCGI library is affected by CVE-2025-23016, causing 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.
Affected configurations
• fastcgi fcgi (>= 0.44 <= 0.82)
Related
References
- http://www.openwall.com/lists/oss-security/2025/04/23/4 Mailing List, Third Party Advisory
- https://github.com/FastCGI-Archives/fcgi2/issues/67 Exploit, Issue Tracking
- https://github.com/FastCGI-Archives/fcgi2/releases/tag/2.4.5 Release Notes
- https://github.com/perl-catalyst/FCGI/issues/14 Exploit, Issue Tracking
- https://patch-diff.githubusercontent.com/raw/FastCGI-Archives/fcgi2/pull/74.patch Patch
- https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library Exploit, Third Party Advisory