📦 A21 Firmware

by Tenda

🔍 What is A21 Firmware?

Description coming soon...

🛡️ Security Overview

Click on a severity to filter vulnerabilities

⚠️ Known Vulnerabilities

CVE-2026-2874

HIGH CVSS 8.8 Feb 21, 2026

A stack-based buffer overflow vulnerability in Tenda A21 routers allows remote attackers to execute arbitrary code by manipulating the SSID parameter. This affects Tenda A21 routers running firmware v...

CVE-2026-2873

HIGH CVSS 8.8 Feb 21, 2026

A stack-based buffer overflow vulnerability in Tenda A21 routers allows remote attackers to execute arbitrary code by manipulating time parameters in the setSchedWifi function. This affects Tenda A21 ...

CVE-2026-2871

HIGH CVSS 8.8 Feb 21, 2026

CVE-2026-2871 is a remote stack-based buffer overflow vulnerability in Tenda A21 routers. Attackers can exploit this to execute arbitrary code or crash the device by sending specially crafted requests...

CVE-2026-2870

HIGH CVSS 8.8 Feb 21, 2026

A stack-based buffer overflow vulnerability in Tenda A21 routers allows remote attackers to execute arbitrary code by manipulating the QoS configuration. This affects Tenda A21 routers running firmwar...