High severity · published Aug 22, 2026
CVE-2026-77945
TRENDnet TEW-821DAP ssi upload.cgi command injection
7.4
CVSS
1.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TE
TEW-821DAP · TRENDnet
2.2.01b05 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77945
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-77945
github.com
https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TEW-821DAP_ssi_Arbitrary_File_Command_Injection.md
vuldb.com
https://vuldb.com/cve/CVE-2026-77945
vuldb.com
https://vuldb.com/submit/881248
vuldb.com
https://vuldb.com/vuln/394174
vuldb.com
https://vuldb.com/vuln/394174/cti
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