CVE-2025-40907
Apache FCGI Perl Integer Overflow Buffer Overflow Vulnerability
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.
INFO
Published Date :
May 16, 2025, 1:15 p.m.
Last Modified :
May 16, 2025, 4:15 p.m.
Source :
9b29abf9-4ab0-4765-b253-1875cd9b441e
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2025-40907
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-40907.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-40907 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-40907 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 16, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L -
New CVE Received by 9b29abf9-4ab0-4765-b253-1875cd9b441e
May. 16, 2025
Action Type Old Value New Value Added 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. Added Reference http://www.openwall.com/lists/oss-security/2025/04/23/4 Added Reference https://github.com/FastCGI-Archives/fcgi2/issues/67 Added Reference https://github.com/FastCGI-Archives/fcgi2/releases/tag/2.4.5 Added Reference https://github.com/perl-catalyst/FCGI/issues/14 Added Reference https://patch-diff.githubusercontent.com/raw/FastCGI-Archives/fcgi2/pull/74.patch Added Reference https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-40907 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-40907
weaknesses.