CVE-2026-0640: Tenda AC23 Firmware

Critical severity, CVSS 9.8. EPSS: 3.5% chance of exploitation in the next 30 days.

A weakness has been identified in Tenda AC23 16.03.07.52. This affects the function sscanf of the file /goform/PowerSaveSet. Executing a manipulation of the argument Time can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.

Affected products

• Tenda AC23 Firmware: version 16.03.07.52 only

Published 2026-01-06. Last modified 2026-06-17.