What is CVE-2025-41732?

CVE-2025-41732 is a critical-severity vulnerability in Wago 0852-1322, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2025-12-10.

How severe is CVE-2025-41732?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Wago 0852-1322

CVE-2025-41732

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.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (28.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Wago 0852-1322
Wago 0852-1322_firmware
Wago 0852-1328
Wago 0852-1328_firmware
Wago Indsutrial-managed-switches — versions 0.0.0

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow
CWE-787 — Out-of-bounds Write

References

info@cert.vde.com (Third Party Advisory)

Frequently asked questions

What is CVE-2025-41732?: CVE-2025-41732 is a critical-severity vulnerability in Wago 0852-1322, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2025-12-10.
How severe is CVE-2025-41732?: Critical severity. CVSS v3 base score is 9.8 out of 10.