CVE-2026-9428 Tenda F1202 PPTPUserSetting fromPPTPUserSetting stack-based overflow
A remote attacker can trigger a stack-based buffer overflow in the Tenda F1202 router's PPTP settings, 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-2026-9428?
CVE-2026-9428 is a high-severity memory corruption vulnerability in Tenda F1202, published on 25 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in Tenda F1202 1.2.0.20(408). Affected is the function fromPPTPUserSetting of the file /goform/PPTPUserSetting. Such manipulation of the argument delno leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2026-9428?
How do I fix CVE-2026-9428?
No fix has been published for CVE-2026-9428 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-2026-9428 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9428 exists.
Sources
Also known as GHSA-8c47-56c4-8w57.