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CVE-2026-22904 is a stack-based buffer overflow in the web-based management interface of WAGO 852 series Industrial Managed Switches (noted as using a modified lighttpd plus custom CGI). The flaw is caused by improper length handling when parsing multiple HTTP cookie fields, including the TRACKID cookie. An unauthenticated remote attacker can send an HTTP request containing oversized cookie values, triggering a stack buffer overflow that can crash the service and may be exploitable for remote code execution.
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What an attacker gets, and what they’ve been doing with it.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.