CVE-2019-17621criticalunder attackCWE-78

CVE-2019-17621

Published · Updated

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100Vexday Risk Score

Patch now. It under exploitation confirmed by CISA and has a working public exploit.

ssvc Actcvss 9.8epss 91%
from disclosure to weapon933 days
Published on NVDDec 30
1st PoC+933d
metasploitDec 24
CISA KEV+1277d
Action required by CISAfederal deadline: 2023-07-20

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

In short

A D-Link router has a critical flaw in its UPnP service that lets anyone on the network run commands with full system privileges without needing a password. An attacker can exploit this by sending a specially crafted request to take complete control of the router.

Technical detail

CWE-78 command injection vulnerability in the /gena.cgi UPnP endpoint allows unauthenticated remote code execution as root via malformed HTTP SUBSCRIBE requests. Attack requires network access but no authentication; successful exploitation grants full system control of the affected D-Link DIR-859 router (versions 1.05, 1.06B01 Beta01).

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
n/a · n/a
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