CVE-2025-14993 Tenda AC18 HTTP Request SetDlnaCfg sprintf stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Tenda AC18 router's HTTP 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-2025-14993?
CVE-2025-14993 is a high-severity memory corruption vulnerability in Tenda Ac18 Firmware, published on 21 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in Tenda AC18 15.03.05.05. This affects the function sprintf of the file /goform/SetDlnaCfg of the component HTTP Request Handler. The manipulation of the argument scanList results in stack-based buffer overflow. The attack can be executed remotely. The exploit is now public and may be used.
Which versions are affected by CVE-2025-14993?
It affects 1 product.
Products include Tenda Ac18 Firmware.
How do I fix CVE-2025-14993?
No fix has been published for CVE-2025-14993 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-2025-14993 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-14993 exists.
Other vulnerabilities in Tenda Ac18 Firmware
Sources
Also known as GHSA-29qw-ccch-hcg3.