CVE-2019-17621VulnerabilityPublished 06/29/2023Updated 10/24/2026
CVE-2019-17621: D-Link DIR-859 Router Command Execution Vulnerability
Affects D-Link DIR-859 RouterSource CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 06/29/2023
- KEV deadline
- 07/20/2023
- EPSS
- 89.6% chance of exploitation in 30 days – higher than 99% of CVEs
What to do
CISA required action
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
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.