CVE-2025-40907

perl-FCGI: The perl-FCGI package provides a Perl module for writing FastCGI applications

CVE-2025-40907 is fixed in 2 products on 1 platform, first by libfcgi-perl 0.78-2ubuntu0.1~esm1, released May 16, 2025. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0068
52nd percentile

The perl-FCGI package provides a Perl module for writing FastCGI applications. FastCGI is a more efficient alternative to traditional CGI, as it keeps application processes persistent across multiple requests. This module allows Perl web applications to handle requests faster and with lower resource overhead, making it suitable for high-traffic environments. Security Fix(es): * perl-fcgi: FCGI versions 0.44 through 0.82, for Perl, include a vulnerable version of the FastCGI fcgi2 (aka fcgi) library (CVE-2025-40907) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Where it's fixed

ProductFixed inFixReleased
Linux
libfcgi-perl · Debian 12.15 (bookworm) 0.79+ds-2 DEBIAN-CVE-2025-40907 May 16, 2025
libfcgi-perl · Debian 13.5 (trixie) 0.79+ds-2 DEBIAN-CVE-2025-40907 May 16, 2025
libfcgi-perl · Debian 14 0.79+ds-2 DEBIAN-CVE-2025-40907 May 16, 2025
libfcgi-perl · Ubuntu 18.04.6 LTS (bionic) 0.78-2ubuntu0.1~esm1 libfcgi-perl 0.78-2ubuntu0.1~esm1 May 16, 2025
libfcgi-perl · Ubuntu 20.04 LTS (focal) 0.79-1ubuntu0.1 libfcgi-perl 0.79-1ubuntu0.1 May 16, 2025
perl-FCGI · RHEL 10 0.82-13.1.el10_0 RHSA-2025:8636 May 16, 2025
perl-FCGI · RHEL 8 1:0.78-12.module+el8.10.0+23147+63faba8d RHSA-2025:8696 Jun 9, 2025
perl-FCGI · RHEL 9 1:0.79-8.1.el9_6 RHSA-2025:8635 Jun 9, 2025
perl-FCGI · almalinux 10 1:0.82-13.1.el10_0 ALSA-2025:8636 Jun 9, 2025
perl-FCGI · almalinux 8 1:0.78-12.module_el8.10.0+4013+e6a7e623 ALSA-2025:8696 Jun 9, 2025
perl-FCGI · almalinux 9 1:0.79-8.1.el9_6 ALSA-2025:8635 Jun 9, 2025
perl-FCGI · ol 10 1:0.82-13.1.el10_0 ELSA-2025-8636 Jun 30, 2025
perl-FCGI · ol 8 1:0.78-12.module+el8.10.0+90610+f44a9047 ELSA-2025-8696 Jun 18, 2025
perl-FCGI · ol 9 1:0.79-8.1.el9_6 ELSA-2025-8635 Jun 9, 2025
perl-FCGI · rocky 10 1:0.82-13.1.el10_0 RLSA-2025:8636 Oct 3, 2025
perl-FCGI · rocky 8 1:0.78-12.module+el8.10.0+1990+6591fbc7 RLSA-2025:8696 Jul 29, 2025
perl-FCGI · rocky 9 1:0.79-8.1.el9_6 RLSA-2025:8635 Oct 4, 2025

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