CVE-2025-41732 Stack-based buffer overflow via unsafe sscanf in check_cookie()
Unauthenticated remote attackers can achieve full device compromise via stack-based buffer overflow in the cookie check function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-41732?
CVE-2025-41732 is a critical memory corruption vulnerability in WAGO Indsutrial-Managed-Switches, published on 10 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-41732?
It affects 2 products.
Products include Wago 0852-1322 Firmware, Wago 0852-1328 Firmware.
How do I fix CVE-2025-41732?
No fix has been published for CVE-2025-41732 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-41732 being exploited?
There is no known exploitation of CVE-2025-41732 in the wild and no public exploit code.
Other vulnerabilities in WAGO Indsutrial-Managed-Switches
Sources
Also known as GHSA-cprc-hgv2-3jr8.