CVE-2026-6197 Tenda F456 AdvSetWrlsafeset formWrlsafeset stack-based overflow
A remote attacker can trigger a stack-based buffer overflow in the Tenda F456 router via the mit_ssid argument, potentially leading to arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6197?
CVE-2026-6197 is a high-severity memory corruption vulnerability in Tenda F456, published on 13 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in Tenda F456 1.0.0.5. This vulnerability affects the function formWrlsafeset of the file /goform/AdvSetWrlsafeset. Executing a manipulation of the argument mit_ssid can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used.
Which versions are affected by CVE-2026-6197?
How do I fix CVE-2026-6197?
No fix has been published for CVE-2026-6197 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-2026-6197 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6197 exists.
Sources
Also known as GHSA-6xp6-q5rv-82xp.