CVE-2026-6015: Tenda AC9 Firmware

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

A vulnerability has been found in Tenda AC9 15.03.02.13. Impacted is the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. Such manipulation of the argument PPPOEPassword leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Tenda AC9 Firmware: version 15.03.02.13 only

Published 2026-04-10. Last modified 2026-06-17.