CVE-2026-3807 Tenda FH1202 AdvSetWrlsafeset formWrlsafeset stack-based overflow
A remote attacker can trigger a stack-based buffer overflow in the Tenda FH1202 router via the AdvSetWrlsafeset endpoint, potentially leading to code execution or denial of service.
- 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-2026-3807?
CVE-2026-3807 is a high-severity memory corruption vulnerability in Tenda Fh1202 Firmware, published on 9 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security vulnerability has been detected in Tenda FH1202 1.2.0.14(408). Impacted is the function formWrlsafeset of the file /goform/AdvSetWrlsafeset. Such manipulation of the argument mit_ssid/mit_ssid_index leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.
Which versions are affected by CVE-2026-3807?
It affects 1 product.
Products include Tenda Fh1202 Firmware.
How do I fix CVE-2026-3807?
No fix has been published for CVE-2026-3807 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-2026-3807 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3807 exists.
Other vulnerabilities in Tenda Fh1202 Firmware
Sources
Also known as GHSA-9243-ffgw-2q55.