CVE-2026-7609: A flaw has been found in TRENDnet TEW-821DAP up to 1.12B01. The impacted element is the function tools_diagnostic of…

CVE-2026-7609 · Severity: medium · CVSS 6.3 · Published 2026-05-02

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.

Technologies: TRENDnet TEW-821DAP, TRENDnet Tew-821dap Firmware. Vendors: TRENDnet.

Quick answers

Is CVE-2026-7609 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-7609 being exploited in the wild.
How severe is CVE-2026-7609?
Medium severity, with a CVSS score of 6.3, published 2 May 2026.
Which products and versions are affected?
TRENDnet TEW-821DAP, TRENDnet Tew-821dap Firmware. The advisory does not name versions.
Is there a fix for CVE-2026-7609?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-7609?
Check whether you run TRENDnet TEW-821DAP or TRENDnet Tew-821dap Firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • TRENDnet TEW-821DAP
  • TRENDnet Tew-821dap Firmware

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.