CVE-2019-17621

D-Link DIR-859 router contains a command execution vulnerability in the UPnP endpoint URL, /gena.cgi. Exploitation allows an unauthenticated remote attacker to execute system commands as root by sending a specially crafted HTTP SUBSCRIBE request to the UPnP service when connecting to the local network. Vendor/Product: D-Link DIR-859 Router. Added to CISA KEV 2023-06-29; required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.