CVE-2022-50926

CRITICAL
2026-01-13 [email protected]
9.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 14, 2026 - 16:25 vuln.today
Public exploit code
CVE Published
Jan 13, 2026 - 23:15 nvd
CRITICAL 9.8

Tags

Golang Privilege Escalation

Description

WAGO 750-8212 PFC200 G2 2ETH RS firmware contains a privilege escalation vulnerability that allows attackers to manipulate user session cookies. Attackers can modify the cookie's 'name' and 'roles' parameters to elevate from ordinary user to administrative privileges without authentication.

Analysis

WAGO PFC200 G2 PLC (firmware affected) allows privilege escalation through cookie manipulation. Users can modify cookie values to gain admin privileges. PoC available.

Technical Context

The session cookie contains name and roles values in a client-modifiable format (CWE-565). An ordinary user can edit their cookie to set roles=admin, gaining administrative access to the PLC.

Affected Products

WAGO 750-8212 PFC200 G2 2ETH RS

Remediation

Apply firmware updates. Implement server-side session management with signed cookies.

Priority Score

69
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +49
POC: +20

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CVE-2022-50926 vulnerability details – vuln.today
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