{"id":"CVE-2026-4377","state":"PUBLISHED","title":"Use of Weak Credentials in D-Link DWR-X1820 router","description":"Dlink DWR-X1820 router uses weak default password generated from its IMEI number and does not require users to change it. An attacker who knows how passwords are generated can easily crack the default password if they have the device IMEI number.\n\nThis issue was fixed in version 1.00B16CP.","publishedAt":"2026-05-28T09:02:44.579Z","updatedAt":"2026-05-28T12:02:42.626Z","severity":{"score":6,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"CERT-PL"},"assigner":"CERT-PL","products":["D-Link Corporation DWR-X1820"],"affected":[{"vendor":"D-Link Corporation","product":"DWR-X1820","defaultStatus":"unaffected","versions":[{"version":"1.00B14CP","status":"affected","lessThan":"1.00B16CP","versionType":"custom"}]}],"references":["https://cert.pl/posts/2026/05/CVE-2026-4377","https://www.dlink.com/pl/pl/products/dwr-1820-cp#support"],"weaknesses":["CWE-1391"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/4xxx/CVE-2026-4377.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4377","state":"PUBLISHED","datePublished":"2026-05-28T09:02:44.579Z","dateUpdated":"2026-05-28T12:02:42.626Z","assignerShortName":"CERT-PL","assignerOrgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateReserved":"2026-03-18T12:46:23.457Z"},"containers":{"cna":{"title":"Use of Weak Credentials in D-Link DWR-X1820 router","descriptions":[{"lang":"en","value":"Dlink DWR-X1820 router uses weak default password generated from its IMEI number and does not require users to change it. An attacker who knows how passwords are generated can easily crack the default password if they have the device IMEI number.\n\nThis issue was fixed in version 1.00B16CP."}],"affected":[{"vendor":"D-Link Corporation","product":"DWR-X1820","defaultStatus":"unaffected","versions":[{"version":"1.00B14CP","status":"affected","lessThan":"1.00B16CP","versionType":"custom"}]}],"references":[{"url":"https://cert.pl/posts/2026/05/CVE-2026-4377","tags":["third-party-advisory"]},{"url":"https://www.dlink.com/pl/pl/products/dwr-1820-cp#support","tags":["product"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":6,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1391","description":"CWE-1391 Use of Weak Credentials","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CERT-PL","orgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateUpdated":"2026-05-28T09:02:44.579Z"},"credits":[{"lang":"en","type":"finder","value":"Bartłomiej Włodarski"}],"datePublic":"2026-05-28T08:58:00.000Z","source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-28T12:01:49.404700Z","id":"CVE-2026-4377","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-28T12:02:42.626Z"}}]}}}