CVE-2022-27022: Tenda AC9 Firmware

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

There is a stack overflow vulnerability in the SetSysTimeCfg() function in the httpd service of Tenda AC9 V15.03.2.21_cn. The attacker can obtain a stable root shell through a constructed payload.

Affected products

• Tenda AC9 Firmware: version 15.03.2.21_cn only

Published 2022-04-07. Last modified 2026-06-17.