CVE-2011-4723
Published: September 8, 2022
Official Description
The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information.
CISA KEV Advisory
D-Link DIR-300 Router Cleartext Storage of a Password Vulnerability
The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information.
The impacted product is end-of-life and should be disconnected if still in use.
Risk Analysis
This high-severity vulnerability in the D-Link DIR-300 router involves storing cleartext passwords, allowing context-dependent attackers to obtain sensitive information. The high EPSS score of 0.12726 indicates a significant likelihood of exploitation, making this an urgent concern. This vulnerability is confirmed to be actively exploited in the wild.
Active exploitation of this vulnerability has been observed in the wild, and it is included in CISA's KEV catalog. The exposure of cleartext passwords makes this a critical threat, potentially leading to unauthorized access.
Update the firmware of D-Link DIR-300 routers to a version that addresses this cleartext password storage issue. If updates are not available, consider replacing the device and ensure strong, encrypted passwords are used for all network devices.
Technical Analysis
CVE-2011-4723 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-2011-4723 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 (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2011-4723 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