CVE-2026-85223: D-Link DNS-340l

Critical severity, CVSS 9.9. EPSS: 3.3% chance of exploitation in the next 30 days.

A vulnerability was found in D-Link DNS-340L 1.01B04. Affected by this issue is some unknown functionality of the file /cgi-bin/dropbox.cgi of the component CGI Handler. Performing a manipulation of the argument callback_url/sync_interval results in os command injection. The attack can be initiated remotely. The exploit has been made public and could be used.

Affected products

• D-Link DNS-340l: version 1.01B04 only

Published 2026-09-03. Last modified 2026-09-04.