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CVE-2025-41732

Critical

Description

An unauthenticated remote attacker can abuse unsafe sscanf calls within the check_cookie() function to write arbitrary data into fixed-size stack buffers which leads to full device compromise.

SeverityCritical
CVSS9.8
Exploit probability—
ProductWago 0852-1328 Firmware
PublishedDec 10, 2025
First seenDec 10, 2025
Weakness typeCWE-121CWE-121

How to fix

Update
  • wago 0852-1328_firmware02.64 or later
  • wago 0852-1322_firmware02.64 or later

Affected products

ProductAffected versionsFixed in
wago 0852-1328_firmwarev < 02.6402.64
wago 0852-1322_firmwarev < 02.6402.64

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