CVE-2022-40976: pilz pas_4000 Path Traversal

Vulnerability summary

CVE-2022-40976 is a medium (CVSS 5.5) Path Traversal vulnerability in pilz pas_4000. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.7% of scored vulnerabilities.

Timeline

1. 24-11-2022
   PublishedVulnerability first disclosed.
2. 25-04-2025
   Last modifiedVulnerability information updated.

Description

A path traversal vulnerability was discovered in multiple Pilz products. An unauthenticated local attacker could use a zipped, malicious configuration file to trigger arbitrary file writes ('zip-slip'). File writes do not affect confidentiality or availability.

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.