CVE-2026-2872 – Tenda A21 MAC Filtering Configuration Endpoint setBlackRule set_device_name stack-based overflow

CVE ID : CVE-2026-2872

Published : Feb. 21, 2026, 4:16 p.m. | 48 minutes ago

Description : A security vulnerability has been detected in Tenda A21 1.0.0.0. This vulnerability affects the function set_device_name of the file /goform/setBlackRule of the component MAC Filtering Configuration Endpoint. Such manipulation of the argument devName/mac leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

Severity: 9.0 | HIGH

Visit the link for more details, such as CVSS details, affected products, timeline, and more…