CVE-2026-22905 PUBLISHED

Authentication Bypass via URI Traversal

Assigner: CERTVDE
Reserved: 13.01.2026 Published: 09.02.2026 Updated: 09.02.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS Score: 7.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	WAGO
Product	0852-1322
Versions	Default: unaffected affected from 0.0.0 to 2.64 (incl.)

Vendor	WAGO
Product	0852-1328
Versions	Default: unaffected affected from 0.0.0 to 2.64 (incl.)

Vendor	WAGO
Product	0852-1322
Versions	Default: unaffected Version 2.64 is affected

Vendor	WAGO
Product	0852-1328
Versions	Default: unaffected Version 2.64 is affected

Credits

Diconium finder

References

https://certvde.com/de/advisories/VDE-2026-004

Problem Types

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE