Assessment
Why it matters
CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 89.6%; technical severity is CVSS 9.8.
The UPnP endpoint URL /gena.cgi in the D-Link DIR-859 Wi-Fi router 1.05 and 1.06B01 Beta01 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.
Who should care
- Teams operating DIR-859 Router, Dir-818lx Firmware, Dir-822 Firmware +12 more
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether DIR-859 Router, Dir-818lx Firmware, Dir-822 Firmware +12 more is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Vendor remediation
Patch and remediation links
Use the vendor source below to confirm the correct fixed version, package or mitigation for your affected product.
Technical details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-78
- Affected versions
- D-Link DIR-859 Router; Dlink Dir-818lx Firmware (Version: -); Dlink Dir-822 Firmware (End Including: 3.12b04); Dlink Dir-823 Firmware (Version: 1.00b06); Dlink Dir-859 Firmware (Version: 1.06b01); Dlink Dir-865l Firmware (End Including: 1.07b01); Dlink Dir-868l Firmware (End Including: 2.05b02); Dlink Dir-869 Firmware (Version: 1.03b02)
- Published
- 30 December 2019
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
Signal timeline
- CVE published
- Added to CISA KEV
- Latest EPSS score: 89.6%
- Signal calculated at 84