CVE-2024-5293: D-Link Dir-2640 Firmware

High severity, CVSS 8.8. EPSS: 1.6% chance of exploitation in the next 30 days.

D-Link DIR-2640 HTTP Referer Stack-Based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-2640-US routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within prog.cgi, which handles HNAP requests made to the lighttpd webserver listening on TCP ports 80 and 443. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21853.

Affected products

• D-Link Dir-2640 Firmware: version 1.11b02 only

Published 2024-05-23. Last modified 2026-06-17.