Vulnerability DatabaseCVE-2025-23016
Mend.io Vulnerability Database
The largest open source vulnerability database
What is a Vulnerability ID?
New vulnerability? Tell us about it!
CVE-2025-23016
January 10, 2025
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 Resources (6)
https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library
http://www.openwall.com/lists/oss-security/2025/04/23/4
https://lists.debian.org/debian-lts-announce/2025/10/msg00009.html
https://github.com/FastCGI-Archives/fcgi2/issues/67
https://security-tracker.debian.org/tracker/CVE-2025-23016
https://github.com/FastCGI-Archives/fcgi2/releases/tag/2.4.5
Do you need more information?
Contact Us
CVSS v4
Base Score:
9.4
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Integer Overflow or Wraparound
CWE-190
EPSS
Base Score:
0.08