CVE-2025-57638 Memory corruption in n/a
A buffer overflow in the Tenda AC9 router allows attackers to execute arbitrary code or cause a denial of service via the sys.vendor configuration value.
- 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-2025-57638?
CVE-2025-57638 is a high-severity memory corruption vulnerability in Tenda Ac9 Firmware, published on 23 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Buffer overflow vulnerability in Tenda AC9 1.0 via the user supplied sys.vendor configuration value.
Weakness: CWE-122
Which versions are affected by CVE-2025-57638?
It affects 1 product.
Products include Tenda Ac9 Firmware.
How do I fix CVE-2025-57638?
No fix has been published for CVE-2025-57638 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-2025-57638 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-57638 exists.
Other vulnerabilities in Tenda Ac9 Firmware
Sources
Also known as GHSA-pjcj-p3c8-pcwx.