CVE-2026-22903

Published: Feb 9, 2026

Modified: Feb 9, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

Description

An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections.

Vendor	Product	Versions
WAGO	0852-1322	affected `0.0.0 - <= 2.64`
WAGO	0852-1328	affected `0.0.0 - <= 2.64`
WAGO	0852-1322	affected `2.64`
WAGO	0852-1328	affected `2.64`

Weaknesses (CWE)

CWE-121

CVSS v3.1 Details

CVSS v3.1 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

References

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

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CVE-2026-22903

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References