CVE-2025-11327 Tenda AC18 SetUpnpCfg stack-based overflow
A remote attacker can trigger a stack-based buffer overflow in the Tenda AC18 router's UPnP configuration handler, 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-2025-11327?
CVE-2025-11327 is a high-severity memory corruption vulnerability in Tenda Ac18 Firmware, published on 6 Oct 2025. 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 AC18 15.03.05.19(6318). This vulnerability affects unknown code of the file /goform/SetUpnpCfg. The manipulation of the argument upnpEn leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.
Which versions are affected by CVE-2025-11327?
It affects 1 product.
Products include Tenda Ac18 Firmware.
How do I fix CVE-2025-11327?
No fix has been published for CVE-2025-11327 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-2025-11327 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-11327 exists.
Other vulnerabilities in Tenda Ac18 Firmware
Sources
Also known as GHSA-77m5-87j2-9j7q.