CVE-2026-22905: wago 0852-1322_firmware Path Traversal

Vulnerability summary

CVE-2026-22905 is a high (CVSS 7.5) Path Traversal vulnerability in wago 0852-1322_firmware. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 52.7% of scored vulnerabilities.

Timeline

1. 09-02-2026
   PublishedVulnerability first disclosed.
2. 09-02-2026
   Last modifiedVulnerability information updated.

Description

An unauthenticated remote attacker can bypass authentication by exploiting insufficient URI validation and using path traversal sequences (e.g., /js/../cgi-bin/post.cgi), gaining unauthorized access to protected CGI endpoints and configuration downloads.

• 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.