{"id":"CVE-2011-4723","published":"2011-12-20T11:55:08Z","modified":"2026-06-16T23:35:18Z","title":"D-Link DIR-300 Router Cleartext Storage of a Password Vulnerability","vendor":"D-Link","product":"DIR-300 Router","tier":"core","eol":null,"description":{"text":"The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information via unspecified vectors.","provenance":"source","from":"NVD"},"summary":{"text":"The D-Link DIR-300 Router stores passwords in cleartext, a weakness that lives in how the device handles and retains sensitive credential data. An attacker with adjacent network access and low-privilege authentication on the device can obtain sensitive information through unspecified vectors, and no user interaction is required.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:14:29Z"},"cvss":{"score":5.7,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","provenance":"source","from":"NVD"},"epss":{"score":0.03064,"percentile":0.87573,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-09-08","dueDate":"2022-09-29","ransomware":false,"requiredAction":"The impacted product is end-of-life and should be disconnected if still in use.","notes":"https://www.dlink.com/uk/en/support/product/dir-300-wireless-g-router; https://nvd.nist.gov/vuln/detail/CVE-2011-4723","provenance":"source"},"vulncheckKev":{"dateAdded":"2018-07-13","exploitedFirstSeen":"2018-07-13","ransomware":false,"evidence":[{"url":"https://www.trendmicro.com/en_us/research/18/g/vpnfilter-affected-devices-still-riddled-with-19-vulnerabilities.html","date":"2018-07-13"},{"url":"https://www.researchgate.net/publication/348602660_An_analysis_of_the_use_of_CVEs_by_IoT_malware","date":"2020-12-01"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-09-08"}],"evidenceTotal":3,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-312","name":"Cleartext Storage of Sensitive Information"},{"id":"CWE-310","name":null}],"references":[{"url":"http://en.securitylab.ru/lab/PT-2011-30","tags":["Broken Link"]},{"url":"http://en.securitylab.ru/lab/PT-2011-30","tags":["Broken Link"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-4723","tags":["US Government Resource"]}],"techniques":[{"id":"T1078","name":"Valid Accounts","tactics":["initial-access","persistence","privilege-escalation","stealth"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Harvested cleartext credentials enable valid account use.","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"stores cleartext passwords, which allows context-dependent attackers","start":26,"end":94}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1552","name":"Unsecured Credentials","tactics":["credential-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Credentials exposed in plaintext on device.","mappingType":"primary_impact","evidence":[{"from":"description","quote":"stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information","start":26,"end":126}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2011-4641","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-4641","exploited":true,"exploitedSince":"2022-09-08","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1078"],"provenance":"ai"},{"stage":"primary","techniques":["T1552"],"provenance":"ai"}],"timeline":[{"date":"2011-12-20","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4723","provenance":"source"},{"date":"2018-07-13","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.trendmicro.com/en_us/research/18/g/vpnfilter-affected-devices-still-riddled-with-19-vulnerabilities.html","provenance":"source"},{"date":"2022-09-08","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2022-09-08","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-4641","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":3915},"priority":{"score":59.5,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 3030 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":17.51,"detail":"percentile 0.8757"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":3.99,"detail":"base score 5.7"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}