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CVE-2026-77945

TRENDnet TEW-821DAP ssi upload.cgi command injection

HIGH
7.4
CVSS Score
Published: August 22, 2026 at 10:45 AM UTC
Updated: October 12, 2026 at 04:10 PM UTC
2 products affected across 1 vendorTew 821DAP FirmwareTEW-821DAP

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Severity
HIGH7.4
Exploit prediction
EPSS 2%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/394174
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/394174/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-77945
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/881248
Exploit
Source: cverecord
https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TEW-821DAP_ssi_Arbitrary_File_Command_Injection.md

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGHVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-77CWE-74

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