CVE-2025-23016

critical

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.

References

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

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

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

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

Details

Source: Mitre, NVD

Published: 2025-01-10

Updated: 2025-04-24

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.3

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00021

Detections

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