CVE-2026-2876: Tenda a18 Firmware

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

A vulnerability was determined in Tenda A18 15.13.07.13. This affects the function parse_macfilter_rule of the file /goform/setBlackRule. This manipulation of the argument deviceList causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.

Affected products

• Tenda a18 Firmware: version 15.13.07.13 only

Published 2026-02-21. Last modified 2026-06-17.