CVE-2025-23016

Published Jan 10, 2025 CVSS 3.1 · 9.3 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4329-1 libfcgi security update
EUVD EUVD EUVD-2025-3075 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.
Ubuntu USN Ubuntu USN USN-7486-1 FastCGI vulnerability
Ubuntu USN Ubuntu USN USN-9051-1 FastCGI vulnerability
History
Type Values Removed Values Added
CPEs cpe:2.3:a:fastcgi:fcgi:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics epss

{'score': 0.00049}

epss

{'score': 0.00041}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Weaknesses CWE-190
References
Metrics cvssV3_1

{'score': 9.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Feb 26, 2026, 7:09 PM
Reserved
Jan 10, 2025, 12:00 AM
Status
Deferred
Published
Jan 10, 2025, 12:15 PM
Modified
Jun 17, 2026, 8:51 AM