{"id":"CVE-2020-37220","state":"PUBLISHED","title":"Huawei HG630 V2 Router Authentication Bypass via Serial Number","description":"Huawei HG630 V2 router contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain administrative access by retrieving the device serial number. Attackers can query the /api/system/deviceinfo endpoint without authentication to extract the SerialNumber field, then use the last 8 characters as the default password to log in to the router.","publishedAt":"2026-05-13T14:22:32.238Z","updatedAt":"2026-05-26T11:51:42.036Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["www.huawei.com HG630 V2 Router"],"affected":[{"vendor":"www.huawei.com","product":"HG630 V2 Router","versions":[{"version":"0","status":"affected","versionType":"custom"}]}],"references":["https://www.exploit-db.com/exploits/48310","https://www.youtube.com/watch?v=vOrIL7L_cVc","https://www.vulncheck.com/advisories/huawei-hg630-v2-router-authentication-bypass-via-serial-number"],"weaknesses":["CWE-798"],"ingestedAt":"2026-10-29T19:47:27.394Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/37xxx/CVE-2020-37220.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2020-37220","state":"PUBLISHED","datePublished":"2026-05-13T14:22:32.238Z","dateUpdated":"2026-05-26T11:51:42.036Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-05-13T13:49:58.352Z"},"containers":{"cna":{"title":"Huawei HG630 V2 Router Authentication Bypass via Serial Number","descriptions":[{"lang":"en","value":"Huawei HG630 V2 router contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain administrative access by retrieving the device serial number. Attackers can query the /api/system/deviceinfo endpoint without authentication to extract the SerialNumber field, then use the last 8 characters as the default password to log in to the router."}],"affected":[{"vendor":"www.huawei.com","product":"HG630 V2 Router","versions":[{"version":"0","status":"affected","versionType":"custom"}]}],"references":[{"url":"https://www.exploit-db.com/exploits/48310","name":"ExploitDB-48310","tags":["exploit"]},{"url":"https://www.youtube.com/watch?v=vOrIL7L_cVc","name":"Reference","tags":["third-party-advisory"]},{"url":"https://www.vulncheck.com/advisories/huawei-hg630-v2-router-authentication-bypass-via-serial-number","name":"VulnCheck Advisory: Huawei HG630 V2 Router Authentication Bypass via Serial Number","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/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"},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-798","lang":"en","description":"Use of Hard-coded Credentials","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-05-26T11:51:42.036Z"},"datePublic":"2020-04-13T00:00:00.000Z","credits":[{"lang":"en","value":"Eslam Medhat","type":"finder"}],"x_generator":{"engine":"vulncheck"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-14T13:41:12.935284Z","id":"CVE-2020-37220","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-14T13:41:47.818Z"}}]}}}