CVE-2026-6631 Tenda F451 httpd webExcptypemanFilter fromwebExcptypemanFilter buffer overflow
Remote attackers can trigger a buffer overflow in the Tenda F451 router's httpd service via the page argument, 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-2026-6631?
CVE-2026-6631 is a high-severity memory corruption vulnerability in Tenda F451, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was determined in Tenda F451 1.0.0.7_cn_svn7958. Impacted is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter of the component httpd. Executing a manipulation of the argument page can lead to buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.
Which versions are affected by CVE-2026-6631?
How do I fix CVE-2026-6631?
No fix has been published for CVE-2026-6631 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-2026-6631 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6631 exists.
Sources
Also known as GHSA-2836-hmqw-wf98.