CVE-2025-31355: Tenda AC6 Firmware

Critical severity, CVSS 9.8. EPSS: 0.3% chance of exploitation in the next 30 days.

A firmware update vulnerability exists in the Firmware Signature Validation functionality of Tenda AC6 V5.0 V02.03.01.110. A specially crafted malicious file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

Affected products

• Tenda AC6 Firmware: version 02.03.01.110 only

Published 2025-08-20. Last modified 2026-06-17.