What’s Vulnerable › Vulnerabilities
CVE-2025-41732: Stack-based buffer overflow via unsafe sscanf in check_cookie()
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-12-10 · updated 2026-09-25
- Weakness: CWE-121
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.
Affected products
- WAGO 0852-1322 Firmware: before 02.64 — fixed in 02.64
- WAGO 0852-1328 Firmware: before 02.64 — fixed in 02.64
How to fix
Upgrade to a fixed version: WAGO 0852-1322 Firmware 02.64; WAGO 0852-1328 Firmware 02.64. Check the vendor advisory for mitigations.
References
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