CVE-2023-36089: D-Link DIR-645 Firmware

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

Authentication Bypass vulnerability in D-Link DIR-645 firmware version 1.03 allows remote attackers to gain escalated privileges via function phpcgi_main in cgibin. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Affected products

• D-Link DIR-645 Firmware: version 1.03 only

Published 2023-07-31. Last modified 2026-06-17.