CVE-2019-20215

CRITICAL

D-Link DIR-859 1.05 and 1.06B01 - Unauthenticated OS Command Injection via M-SEARCH Method

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2019-20215. PoCs published by Metasploit, s1kr10s, secenv, including Metasploit module exploits/linux/upnp/dlink_dir859_exec_ssdpcgi.

AI-analyzed exploit summary This Metasploit module exploits an unauthenticated remote command execution vulnerability in D-Link devices via the ssdpcgi service by injecting commands into the URN or UUID headers of an M-SEARCH UDP request.

Description

D-Link DIR-859 1.05 and 1.06B01 Beta01 devices allow remote attackers to execute arbitrary OS commands via a urn: to the M-SEARCH method in ssdpcgi() in /htdocs/cgibin, because HTTP_ST is mishandled. The value of the urn: service/device is checked with the strstr function, which allows an attacker to concatenate arbitrary commands separated by shell metacharacters.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Metasploit · rubyremotelinux_mips
https://www.exploit-db.com/exploits/48037

This Metasploit module exploits an unauthenticated remote command execution vulnerability in D-Link devices via the ssdpcgi service by injecting commands into the URN or UUID headers of an M-SEARCH UDP request.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: D-Link Devices (specific versions not listed)
No auth needed
Prerequisites: Network access to UDP port 1900 on the target device
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC EXCELLENT
by s1kr10s, secenv · rubypoclinux
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/upnp/dlink_dir859_exec_ssdpcgi.rb

This Metasploit module exploits an unauthenticated remote command execution vulnerability in D-Link devices via the ssdpcgi service. It leverages command injection through malformed URN or UUID headers in UPnP M-SEARCH requests.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: D-Link devices (e.g., DIR-859) with vulnerable ssdpcgi
No auth needed
Prerequisites: Network access to UDP port 1900 · Vulnerable D-Link device
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3

Scores

CVSS v3 9.8
EPSS 0.9033
EPSS Percentile 99.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-78
Status published
Products (2)
dlink/dir-859_firmware 1.05
dlink/dir-859_firmware 1.06b01 beta01
Published Jan 29, 2020
Tracked Since Feb 18, 2026