CVE-2019-17621
D-Link DIR-859 Router Command Execution Vulnerability
- Critical 9.8
- Exploited: added to CISA KEV 29 Jun 2023
Description
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.
Key facts
- Published
- 30 Dec 2019
- Last changed
- 21 Oct 2025
- Assigned by
- mitre
- KEV added
- 29 Jun 2023
- KEV fix due
- 20 Jul 2023
- EPSS
- 90.615% likely to be exploited in the next 30 days, higher than 99.807% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 30 Dec 2019 Published
- 29 Jun 2023 CVE-2019-17621 added to CISA KEV
- 29 Jun 2023 Added to the CISA KEV catalogue
Weakness
Practice this bug class
HackZoneLabs has a hands-on lab on OS command injection (CWE-78).