CVE-2026-7609

MEDIUM

TRENDnet TEW-821DAP Firmware Udpate diagnostic tools_diagnostic os command injection

Title source: cna

Description

A flaw has been found in TRENDnet TEW-821DAP up to 1.12B01. The impacted element is the function tools_diagnostic of the file /tmp/diagnostic of the component Firmware Udpate. This manipulation causes os command injection. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling". This vulnerability only affects products that are no longer supported by the maintainer.

References (4)

Core 4

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-360566 | TRENDnet TEW-821DAP Firmware Udpate diagnostic tools_diagnostic os command injection

https://vuldb.com/vuln/360566

Signature, Permissions Required signature permissions-required

VDB-360566 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/360566/cti

Third Party Advisory third-party-advisory

Submit #806216 | Trendnet TEW-821DAP v1.12B01 CWE-78 Improper Neutralization of Special Elements used in an O

https://vuldb.com/submit/806216

Patch exploit patch

https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI2.md

View Patch ZIP pw:eip

Scores

CVSS v3 6.3

EPSS 0.0106

EPSS Percentile 77.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

TRENDnet/TEW-821DAP 1.12B01

Published May 02, 2026

Tracked Since May 02, 2026