CVE-2026-2191: Tenda AC9 Firmware

High severity, CVSS 7.2. EPSS: 0.8% chance of exploitation in the next 30 days.

A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Affected products

• Tenda AC9 Firmware: version 15.03.06.42_multi only

Published 2026-02-08. Last modified 2026-06-17.