CVEvulnerability

CVE-2019-17621

9.8 CRITICAL Known exploited Published 2019-12-30 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

D-Link DIR-859 Router Command Execution Vulnerability — D-Link DIR-859 Router

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.

Added to KEV
2023-06-29
Remediation due
2023-07-20
Ransomware use
Unknown
Required action
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Notes
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147; https://nvd.nist.gov/vuln/detail/CVE-2019-17621
Status
Analyzed
Published
2019-12-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-78

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 configurations

• dlink dir-859 firmware (<= 1.05b03) • dlink dir-859 firmware 1.06b01 • dlink dir-822 firmware (<= 2.03b01) • dlink dir-822 firmware (<= 3.12b04) • dlink dir-823 firmware (<= 1.00b06) • dlink dir-823 firmware 1.00b06 • dlink dir-865l firmware (<= 1.07b01) • dlink dir-868l firmware (<= 1.12b04) • dlink dir-868l firmware (<= 2.05b02) • dlink dir-869 firmware (<= 1.03b02) • dlink dir-869 firmware 1.03b02 • dlink dir-880l firmware (<= 1.08b04) • dlink dir-890l firmware (<= 1.11b01) • dlink dir-890l firmware 1.11b01 • dlink dir-890r firmware (<= 1.11b01) • dlink dir-890r firmware 1.11b01 • dlink dir-885l firmware (<= 1.12b05) • dlink dir-885r firmware (<= 1.12b05) • dlink dir-895l firmware (<= 1.12b10) • dlink dir-895r firmware (<= 1.12b10) • dlink dir-818lx firmware

Related

Weakness · CWE (1)

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness

References