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CVE-2019-17621

Published: Dec 30, 2019Updated: Nov 7, 2025 Sources: CVE List NVD BDUCWE-78
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
89.6%
Top 0.2%
CISA KEV
Active Exploitation
Since Jun 29, 2023
Exploits
1 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-78

Affected Products

dir-859 firmwaredlinkNetworking Infrastructure
dir-822 firmwaredlinkNetworking Infrastructure
dir-823 firmwaredlinkNetworking Infrastructure
dir-865l firmwaredlinkNetworking Infrastructure
dir-868l firmwaredlinkNetworking Infrastructure
dlinkcommercialTWNetworking Infrastructure
and 21 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Jun 29, 2023
Remediation due:Jul 20, 2023

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

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

http://packetstormsecurity.com/files/156054/D-Link-DIR-859-Unauthenticated-Remote-Command-Execution.html
packetstormsecurity.com
https://medium.com/%40s1kr10s/d-link-dir-859-rce-unautenticated-cve-2019-17621-en-d94b47a15104
medium.com
https://medium.com/%40s1kr10s/d-link-dir-859-rce-unautenticated-cve-2019-17621-es-fad716629ff9
medium.com
and 6 more references View all →

Timeline

Published
Dec 30, 2019
Added to CISA KEV
Jun 29, 2023
Last Updated
Nov 7, 2025

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