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HIGH · CVSS 8.8 CISA Known Exploited Vulnerability

CVE-2017-6334

NETGEAR DGN2200 Devices OS Command Injection Vulnerability

NETGEAR DGN2200 Devices

dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in the host_name field of an HTTP POST request, a different vulnerability than CVE-2017-6077.

CVSS
8.8
HIGH
EPSS
72.6%
30-day exploitation
Ransomware groups
0
recorded exploiting
Published
6 Mar 2017
CWE-78

Exploitation status

CISA Known Exploited Vulnerabilities

Listed by CISA on 25 March 2022. US federal agencies were required to remediate it by 15 April 2022.

EPSS — exploitation probability

FIRST puts the probability of exploitation activity in the next 30 days at 72.6%, which is higher than 99.4% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Frequently asked questions

Is CVE-2017-6334 being exploited by ransomware groups?

No ransomware group in this database is currently recorded as exploiting CVE-2017-6334.

What does CVE-2017-6334 affect?

CVE-2017-6334 affects NETGEAR DGN2200 Devices. dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in the host_name field of an HTTP POST request, a different vulnerability than CVE-2017-6077.

How severe is CVE-2017-6334?

CVE-2017-6334 is rated HIGH with a CVSS base score of 8.8. EPSS puts the probability of exploitation in the next 30 days at 72.6%, higher than 99.4% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 15 April 2022.

How should organisations respond to CVE-2017-6334?

Apply the vendor patch for NETGEAR DGN2200 Devices as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.