CVE-2019-17621

CRITICAL
9.8
CVSS Score
Published: December 30, 2019 at 04:09 PM UTC
Updated: June 17, 2026 at 02:24 AM UTC
27 products affected across 1 vendorDir 823G FirmwareDir 868L FirmwareDIR-822

Using N/A by N/A?

Get instant alerts when new vulnerabilities affect N/A - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
CRITICAL9.8
Exploitation
CISA KEV
Exploit prediction
EPSS 91%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score90.6%

EPSS (Exploit Prediction Scoring System) estimates a 90.6% chance this CVE is exploited in the wild within the next 30 days — higher than 100% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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.
Ransomware Use
Unknown
Added to KEV
Jun 29, 2023
Remediation Due
Jul 20, 2023
1198 days overdue

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
dlink-dir-818lx (same device)
v ≤ 2.03b01v ≤ 3.12b04
v ≤ 1.00b061.00b06 beta
dlink-dir-823 (same device)
v ≤ 1.05b031.06b01 beta1
dlink-dir-859 (same device)
v ≤ 1.07b01
dlink-dir-865l (same device)
v ≤ 1.12b04v ≤ 2.05b02
dlink-dir-868l (same device)
v ≤ 1.03b021.03b02 beta02
dlink-dir-869 (same device)
v ≤ 1.08b04
dlink-dir-880l (same device)
v ≤ 1.12b05
dlink-dir-885l (same device)
v ≤ 1.12b05
dlink-dir-885r (same device)

SSVC — Action Prioritization

SSVCActiveAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-78

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card