CVE-2025-2359: D-Link Dir-823g Firmware

Critical severity, CVSS 9.8. EPSS: 15.4% chance of exploitation in the next 30 days.

A vulnerability classified as critical has been found in D-Link DIR-823G 1.0.2B05_20181207. Affected is the function SetDDNSSettings of the file /HNAP1/ of the component DDNS Service. The manipulation of the argument SOAPAction leads to improper authorization. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Affected products

• D-Link Dir-823g Firmware: version 1.0.2b05_20181207 only

Published 2025-03-17. Last modified 2026-06-17.