CVE-2017-6334
Published: March 25, 2022
Official Description
dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands
CISA KEV Advisory
NETGEAR DGN2200 Devices OS Command Injection Vulnerability
dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands
The impacted product is end-of-life and should be disconnected if still in use.
Risk Analysis
A command injection vulnerability in the dnslookup.cgi script of NETGEAR DGN2200 devices allows remote authenticated users to execute arbitrary operating system commands. The high EPSS score of 0.89207 indicates a very high likelihood of exploitation, and its presence in CISA's KEV confirms it has been actively exploited.
This vulnerability is actively being exploited in the wild. Authenticated attackers can remotely execute commands on affected devices.
Update NETGEAR DGN2200 devices to firmware versions beyond 10.0.0.50. Regularly review and update network device firmware to mitigate known vulnerabilities.
Technical Analysis
CVE-2017-6334 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2017-6334 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2017-6334 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1