Detections
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Linux Distros Unpatched Vulnerability : CVE-2025-40909
medium Nessus Plugin ID 244775
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Synopsis
The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.Description
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.- Perl threads have a working directory race condition where file operations may target unintended paths. If a directory handle is open at thread creation, the process-wide current working directory is temporarily changed in order to clone that handle for the new thread, which is visible from any third (or more) thread already running. This may lead to unintended operations such as loading code or accessing files from unexpected locations, which a local attacker may be able to exploit. The bug was introduced in commit 11a11ecf4bea72b17d250cfb43c897be1341861e and released in Perl version 5.13.6 (CVE-2025-40909)
Note that Nessus relies on the presence of the package as reported by the vendor.
Solution
There is no known solution at this time.See Also
https://access.redhat.com/security/cve/cve-2025-40909
Plugin Details
Severity: Medium
ID: 244775
File Name: unpatched_CVE_2025_40909.nasl
Version: 1.4
Type: local
Agent: unix
Family: Misc.
Published: 8/7/2025
Updated: 3/9/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.2
CVSS v2
Risk Factor: Medium
Base Score: 4.4
Temporal Score: 3.7
Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2025-40909
CVSS v3
Risk Factor: Medium
Base Score: 5.9
Temporal Score: 5.4
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C
Vulnerability Information
CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:centos:centos:perl-devel, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:centos:centos:perl-utils, p-cpe:/a:redhat:enterprise_linux:perl-devel, p-cpe:/a:centos:centos:perl-devel-peek, p-cpe:/a:centos:centos:perl-errno, p-cpe:/a:redhat:enterprise_linux:perl-devel-peek, p-cpe:/a:redhat:enterprise_linux:perl-extutils-miniperl, p-cpe:/a:centos:centos:perl-module-loaded, p-cpe:/a:centos:centos:perl-interpreter, p-cpe:/a:canonical:ubuntu_linux:perl, p-cpe:/a:redhat:enterprise_linux:perl-macros, p-cpe:/a:centos:centos:perl-net-ping, p-cpe:/a:redhat:enterprise_linux:perl-utils, p-cpe:/a:redhat:enterprise_linux:perl, p-cpe:/a:redhat:enterprise_linux:perl-open, p-cpe:/a:redhat:enterprise_linux:perl-selfloader, p-cpe:/a:redhat:enterprise_linux:perl-devel-selfstubber, p-cpe:/a:redhat:enterprise_linux:perl-tests, p-cpe:/a:centos:centos:perl-libnetcfg, p-cpe:/a:centos:centos:perl-test, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:perl-interpreter, p-cpe:/a:redhat:enterprise_linux:perl-extutils-embed, p-cpe:/a:redhat:enterprise_linux:perl-io, p-cpe:/a:centos:centos:perl-devel-selfstubber, p-cpe:/a:centos:centos:perl-extutils-miniperl, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:perl-memoize, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:redhat:enterprise_linux:perl-pod-html, p-cpe:/a:centos:centos:perl-memoize, p-cpe:/a:centos:centos:perl-locale-maketext-simple, p-cpe:/a:centos:centos:perl-io-zlib, p-cpe:/a:centos:centos:perl-attribute-handlers, p-cpe:/a:centos:centos:perl-open, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:centos:centos:perl-tests, p-cpe:/a:redhat:enterprise_linux:perl-io-zlib, p-cpe:/a:centos:centos:perl-extutils-embed, p-cpe:/a:redhat:enterprise_linux:perl-net-ping, p-cpe:/a:redhat:enterprise_linux:perl-libs, p-cpe:/a:centos:centos:perl-libs, p-cpe:/a:centos:centos:perl, p-cpe:/a:redhat:enterprise_linux:perl-errno, p-cpe:/a:redhat:enterprise_linux:perl-locale-maketext-simple, p-cpe:/a:redhat:enterprise_linux:perl-attribute-handlers, p-cpe:/a:redhat:enterprise_linux:perl-time-piece, p-cpe:/a:debian:debian_linux:perl, p-cpe:/a:redhat:enterprise_linux:perl-module-loaded, p-cpe:/a:centos:centos:perl-pod-html, p-cpe:/a:centos:centos:perl-io, p-cpe:/a:redhat:enterprise_linux:perl-libnetcfg, p-cpe:/a:redhat:enterprise_linux:perl-test, p-cpe:/a:redhat:enterprise_linux:perl-math-complex, p-cpe:/a:centos:centos:perl-math-complex, p-cpe:/a:centos:centos:perl-time-piece, p-cpe:/a:centos:centos:perl-macros, p-cpe:/a:centos:centos:perl-selfloader
Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier
Exploit Ease: No known exploits are available
Vulnerability Publication Date: 5/30/2025
Reference Information
CVE: CVE-2025-40909