CVE-2016-11021
Published: March 25, 2022
Official Description
setSystemCommand on D-Link DCS-930L devices allows a remote attacker to execute code via an OS command.
CISA KEV Advisory
D-Link DCS-930L Devices OS Command Injection Vulnerability
setSystemCommand on D-Link DCS-930L devices allows a remote attacker to execute code via an OS command.
The impacted product is end-of-life and should be disconnected if still in use.
Risk Analysis
This vulnerability in D-Link DCS-930L devices allows a remote attacker to execute arbitrary code via the setSystemCommand function. The high EPSS score of 0.91253 indicates a very high likelihood of exploitation, making this a critical vulnerability. Its presence in CISA's KEV catalog confirms it has been actively exploited.
This vulnerability is actively exploited in the wild. It is remotely exploitable, allowing attackers to execute commands without direct access to the device.
Apply the latest firmware updates for D-Link DCS-930L devices to patch this command execution vulnerability. If updates are unavailable, consider replacing the device or isolating it from public networks.
Technical Analysis
CVE-2016-11021 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-2016-11021 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-2016-11021 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