Vulnerability · Published Aug 22, 2026 · Assigned by VulDB
CVE-2026-77945TRENDnet TEW-821DAP ssi upload.cgi command injection
High 7.4
In plain English
A high-severity command injection in TEW-821DAP from TRENDnet. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 78% of all known vulnerabilities).
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)1.8%top 21.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TRENDnet | TEW-821DAP | 2.2.01b05 |
Weakness: CWE-77, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-394174 | TRENDnet TEW-821DAP ssi upload.cgi command injection vdb-entry, technical-description
- VDB-394174 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-77945 | CVE Analysis and Report third-party-advisory
- Submit #881248 | TRENDnet TEW-821DAP Wireless Access Point v2.2.01b05 Command Injection third-party-advisory
- https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TEW-821DAP_ssi_Arbitrary_File_Command_Injection.md exploit