CVE-2026-77945: TRENDnet TEW-821DAP ssi upload.cgi command injection

Severity: high (CVSS 7.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-22 · updated 2026-10-12
Weakness: CWE-74

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

TRENDnet TEW-821DAP: 2.2.01b05

References

https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TEW-821DAP_ssi_Arbitrary_File_Command_Injection.md
https://vuldb.com/cve/CVE-2026-77945
https://vuldb.com/submit/881248
https://vuldb.com/vuln/394174
https://vuldb.com/vuln/394174/cti

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