CVE-2011-4723
D-Link DIR-300 Router Cleartext Storage of a Password Vulnerability
D-Link DIR-300 Router
The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information via unspecified vectors.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 8 September 2022. US federal agencies were required to remediate it by 29 September 2022.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 3.1%, which is higher than 87.7% 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:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Frequently asked questions
Is CVE-2011-4723 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2011-4723.
What does CVE-2011-4723 affect?
CVE-2011-4723 affects D-Link DIR-300 Router. The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information via unspecified vectors.
How severe is CVE-2011-4723?
CVE-2011-4723 is rated MEDIUM with a CVSS base score of 5.7. EPSS puts the probability of exploitation in the next 30 days at 3.1%, higher than 87.7% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 29 September 2022.
How should organisations respond to CVE-2011-4723?
Apply the vendor patch for D-Link DIR-300 Router 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.