Known exploited · D-Link
CVE-2011-4723: D-Link DIR-300 Router Cleartext Storage of a Password Vulnerability
What it is
The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information.
- Vendor
- D-Link
- Product
- DIR-300 Router
- Added to KEV
- September 8, 2022
- CISA due date
- September 29, 2022
- Ransomware use
- Unknown
- Weakness
- CWE-310: Cryptographic Issues
What CISA requires
The impacted product is end-of-life and should be disconnected if still in use.
Forensic triage
No
What to do now
- Find every instance of DIR-300 Router you run, including the forgotten ones, and check its version against the vendor advisory.
- Apply the vendor's fix or mitigation, before September 29, 2022 if you are bound by CISA's deadline, sooner if it faces the internet.
- Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
References
H2 Security
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Start freeSource: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.