CVE-2026-77945
HighCVSS 7.4Exploitation Probability (EPSS)
Elevated risk68th percentile - higher than 68% of all known CVEs
Summary
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.
Risk Assessment
The vulnerability may allow a remote attacker to execute arbitrary system commands on the device, potentially leading to full compromise of the device and network.
Recommendation
It is recommended to immediately update the device firmware to a patched version and restrict access to the administrative interface.
Other vulnerabilities in TRENDnet TEW-821DAP
See all- 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-2026-76582High
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.
Original NVD description (English source)
A vulnerability was found in TRENDnet TEW-821DAP 2.2.01b05. Affected is an unknown function of the file /cgi-bin/upload.cgi of the component ssi. Performing a manipulation of the argument filename results in command injection. The attack may be initiated remotely. The exploit has been made public and could be used.