VAR-202507-2739

Vulnerability from variot - Updated: 2025-08-11 23:10

A vulnerability classified as critical has been found in Tenda AC20 up to 16.03.08.12. Affected is an unknown function of the file /goform/SetSysTimeCfg of the component httpd. The manipulation of the argument timeZone leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Shenzhen Tenda Technology Co.,Ltd. of AC20 The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The Tenda AC20 is a dual-band wireless router that supports IPv6. It features a triple-core 1GHz main control chip and is equipped with six 6dBi external antennas, achieving a maximum wireless transmission rate of 2033Mbps.

The Tenda AC20 suffers from a buffer overflow vulnerability caused by improper handling of the timeZone parameter in the httpd component's /goform/SetSysTimeCfg file. This vulnerability could allow an attacker to execute arbitrary code

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