CVE-2026-22903

CWE-121 — Stack-based Buffer Overflow3 documents3 sources
Severity
9.8CRITICAL
EPSS
0.7%
top 29.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Wago 0852-1322Wago 0852-1328
Timeline
PublishedFeb 9

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

▶CVEListV5wago/0852-13220.0.0 — 2.64+1
▶CVEListV5wago/0852-13280.0.0 — 2.64+1

🔴Vulnerability Details

2
GHSA
GHSA-23jw-jg3f-6352: An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie↗2026-02-09
▶
CVEList
Stack Overflow via SESSIONID Cookie in lighttpd↗2026-02-09
▶
CVE-2026-22903 (CRITICAL CVSS 9.8) | An unauthenticated remote attacker | cvebase.io