CVE-2026-82691: D-Link DNS-320l

Critical severity, CVSS 9.1. EPSS: 3.6% chance of exploitation in the next 30 days.

A vulnerability has been found in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345 up to 20260717. Affected by this issue is some unknown functionality of the file /cgi-bin/usb_device.cgi of the component CGI Handler. Such manipulation of the argument f_ups_ip leads to os command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.

Affected products

• D-Link DNS-320l: version 20260717 only
• D-Link DNS-327l: version 20260717 only
• D-Link DNS-340l: version 20260717 only
• D-Link DNS-345: version 20260717 only

Published 2026-08-31. Last modified 2026-09-02.