CVE-2025-52221 Memory corruption in n/a
A buffer overflow in the Tenda AC6 router allows attackers to execute arbitrary code or cause a denial of service via crafted parameters.
- 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-2025-52221?
CVE-2025-52221 is a high-severity memory corruption vulnerability in Tenda Ac6 Firmware, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Tenda AC6 15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetCfm function via the funcname, funcpara1, and funcpara2 parameters.
Which versions are affected by CVE-2025-52221?
It affects 1 product.
Products include Tenda Ac6 Firmware.
How do I fix CVE-2025-52221?
No fix has been published for CVE-2025-52221 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-2025-52221 being exploited?
There is no known exploitation of CVE-2025-52221 in the wild and no public exploit code.
Other vulnerabilities in Tenda Ac6 Firmware
Sources
Also known as GHSA-6qx4-cmrg-x79q.