CVE-2019-16920
Published: March 25, 2022
Official Description
Multiple D-Link routers contain a command injection vulnerability which can allow attackers to achieve full system compromise.
CISA KEV Advisory
D-Link Multiple Routers Command Injection Vulnerability
Multiple D-Link routers contain a command injection vulnerability which can allow attackers to achieve full system compromise.
The impacted product is end-of-life and should be disconnected if still in use.
Risk Analysis
Multiple D-Link routers are affected by a command injection vulnerability that can lead to full system compromise. The very high EPSS score of 0.94380 indicates a strong likelihood of exploitation, making this a critical vulnerability for D-Link router users.
This vulnerability is actively exploited in the wild and is included in CISA's KEV catalog, confirming its use by threat actors. The command injection flaw suggests it is remotely exploitable.
Users of D-Link routers should apply the latest firmware updates provided by the vendor to address this command injection vulnerability. Restrict administrative access to routers and use strong, unique passwords.
Technical Analysis
CVE-2019-16920 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-2019-16920 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-2019-16920 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