CVE-2019-17621

CISA description

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.

Required action

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

Notes & references

• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147
• https://nvd.nist.gov/vuln/detail/CVE-2019-17621

Where this lands in 800-53

Vulnerability data triggers these controls during assessment and continuous monitoring.

• RA-5 · Vulnerability Monitoring and Scanning
• SI-2 · Flaw Remediation
• CM-6 · Configuration Settings
• SI-7 · Software, Firmware, and Information Integrity
• CM-8 · System Component Inventory

External lookups

• NVD · CVE-2019-17621
• CVE.org · CVE-2019-17621
• CISA KEV catalog (canonical)