TRENDnet TEW-821DAP vulnerabilities
9 known CVE vulnerabilities in TRENDnet TEW-821DAP, translated and rated.
- CVE-2026-77946Critical
A vulnerability was found in TRENDnet TEW-821DAP 2.2.01b05 in the uci_safe_get function of /cgi-bin/apply_time.cgi in the NTP Timezone Configuration Handler. Manipulating the system.ntp.server, system.ntp.enable_server, cameo.time.time_zone, and cameo.cameo.syslog_server arguments leads to a stack-based buffer overflow. The attack can be launched remotely, and the exploit has been publicly disclosed.
- CVE-2026-77945High
A vulnerability was found in TRENDnet TEW-821DAP 2.2.01b05 in an unknown function of /cgi-bin/upload.cgi in the ssi component. Manipulating the filename argument results in command injection. The attack can be initiated remotely, and the exploit has been made public.
- CVE-2026-76582High
In TRENDnet TEW-821DAP version 2.2.01b05, a command injection vulnerability exists in the popen/system function of the file /cgi-bin/ping.cgi in the ssi component. Manipulating the ipaddr argument can lead to command injection. The attack can be launched remotely, and the exploit has been publicly disclosed.
- CVE-2026-15487Medium
A vulnerability was found in TRENDnet TEW-821DAP version 1.11B03, affecting the function sub_41FBD0 in the file /goform/system_ntp. Remote manipulation of the Hostname argument allows OS command injection. The vendor states the device is end-of-life (EOL) and will not receive patches.
- CVE-2026-15486Medium
A vulnerability was found in TRENDnet TEW-821DAP firmware version 1.11B03, allowing OS command injection via the hostname, username, and password parameters in the /goform/tools_ddns file. The attack can be performed remotely, and the vendor states the device is end-of-life (EOL).
- CVE-2026-15485Medium
A flaw in TRENDnet TEW-821DAP version 1.11B03 allows OS command injection via the sub_43F2C4 function in /goform/tools_nslookup. The attack is remotely exploitable by manipulating the nslookup_target or dns_server arguments. The vendor states the device is end-of-life (EOL) and will not receive patches.
- CVE-2026-15484High
A buffer overflow vulnerability was found in the TRENDnet TEW-821DAP version 1.12B01 in the sub_41EC14 function of the /goform/tools_nslookup file within the ssi component. The attack can be launched remotely. The vendor states the device is End-of-Life (EOL) and will not be patched.
- CVE-2026-15483High
A buffer overflow vulnerability has been detected in TRENDnet TEW-821DAP version 1.12B01 in the sub_41EC14 function of the /goform/tools_nslookup file within the ssi component. An attacker can remotely exploit this by manipulating the nslookup_target argument. The vendor states the device is End-of-Life (EOL) and will not issue patches.
- CVE-2023-51148High
An issue in TRENDnet AC1200 Dual Band PoE Indoor Wireless Access Point TEW-821DAP v.3.00b06 allows an attacker to execute arbitrary code via the 'mycli' command-line interface component.

