CVE-2025-10838: Tenda AC21 Firmware

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

A vulnerability was identified in Tenda AC21 16.03.08.16. The affected element is the function sub_45BB10 of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

Affected products

• Tenda AC21 Firmware: up to and including 16.03.08.16

Published 2025-09-23. Last modified 2026-06-17.