A vulnerability was detected in Tenda A21 1.0.0.0. This issue affects the function setSchedWifi of the file /goform/openSchedWifi. Performing a manipulation of the argument schedStartTime/schedEndTime results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used.

Published: 2026-02-21

CVSS: 9.0

CVSS Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C

Download CVE-2026-2873 POC (Proof-of-Concept) here:

Tip: Download official Tor Browser at https://www.torproject.org/download/ to access .onion links.

Check our portfolio:

https://dnacompany.com/poc-680-cve-2026-27498/

https://dnacompany.com/poc-491-cve-2026-2884/

https://dnacompany.com/poc-716-cve-2026-27028/