CVE-2026-36791 Memory corruption in n/a
Attackers can cause a Denial of Service on Tenda O3v3 routers via a crafted HTTP request exploiting a stack overflow.
- 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-2026-36791?
CVE-2026-36791 is a high-severity memory corruption vulnerability in n/a, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Shenzhen Tenda Technology Co., Ltd Tenda O3v3 v1.0.0.5 was discovered to contain a stack overflow in the save_list_data parameter of the formSetCfm function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.
Weakness: CWE-121
Which versions are affected by CVE-2026-36791?
How do I fix CVE-2026-36791?
No fix has been published for CVE-2026-36791 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-2026-36791 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-36791 exists.
Sources
Also known as GHSA-9qhg-mc74-5cqv.