{"api_version":"1","generated_at":"2026-07-23T14:56:02+00:00","cve":"CVE-2021-45031","urls":{"html":"https://cve.report/CVE-2021-45031","api":"https://cve.report/api/cve/CVE-2021-45031.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-45031","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-45031"},"summary":{"title":"Weak Authentication in Login Function of USC+","description":"A vulnerability in MEPSAN's USC+ before version 3.0 has a weakness in login function which lets attackers to generate high privileged accounts passwords.","state":"PUBLISHED","assigner":"TR-CERT","published_at":"2022-03-30 20:15:08","updated_at":"2026-05-18 13:16:30"},"problem_types":["CWE-305","NVD-CWE-noinfo","CWE-305 CWE-305 Authentication Bypass by Primary Weakness"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Secondary","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"iletisim@usom.gov.tr","type":"Secondary","score":"7.7","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"7.7","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H","version":"3.1"}},{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"7.5","severity":"","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","data":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","baseScore":7.5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"}}],"references":[{"url":"https://www.usom.gov.tr/bildirim/tr-22-0269","name":"https://www.usom.gov.tr/bildirim/tr-22-0269","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"Ulusal Siber Olaylara Müdahale Merkezi - USOM","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-22-0269","name":"https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-22-0269","refsource":"iletisim@usom.gov.tr","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-45031","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45031","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Mepsan","product":"USC+","version":"affected unspecified 3.0 custom","platforms":[]}],"timeline":[],"solutions":[{"source":"CNA","title":"","value":"USC+ should be updated to the latest version provided by the vendor.","time":"","lang":"en"}],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Kürşat ÇETİN","lang":"en"}],"nvd_cpes":[{"cve_year":"2021","cve_id":"45031","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"mepsan","cpe5":"stawiz_usc\\+\\+","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2021","cve_id":"45031","cve":"CVE-2021-45031","epss":"0.003500000","percentile":"0.575770000","score_date":"2026-05-25","updated_at":"2026-05-26 00:10:58"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-04T04:32:13.512Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://www.usom.gov.tr/bildirim/tr-22-0269"}],"title":"CVE Program Container"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"USC+","vendor":"Mepsan","versions":[{"lessThan":"3.0","status":"affected","version":"unspecified","versionType":"custom"}]}],"credits":[{"lang":"en","type":"finder","user":"00000000-0000-4000-9000-000000000000","value":"Kürşat ÇETİN"}],"datePublic":"2022-03-29T21:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>A vulnerability in MEPSAN's USC+ before version 3.0 has a weakness in login function which lets attackers to generate high privileged accounts passwords.</p>"}],"value":"A vulnerability in MEPSAN's USC+ before version 3.0 has a weakness in login function which lets attackers to generate high privileged accounts passwords."}],"impacts":[{"capecId":"CAPEC-115","descriptions":[{"lang":"en","value":"CAPEC-115 Authentication Bypass"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-305","description":"CWE-305 Authentication Bypass by Primary Weakness","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-05-18T12:06:35.545Z","orgId":"ca940d4e-fea4-4aa2-9a58-591a58b1ce21","shortName":"TR-CERT"},"references":[{"tags":["government-resource","broken-link"],"url":"https://www.usom.gov.tr/bildirim/tr-22-0269"},{"tags":["government-resource"],"url":"https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-22-0269"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>USC+ should be updated to the latest version provided by the vendor.</p>"}],"value":"USC+ should be updated to the latest version provided by the vendor."}],"source":{"advisory":"TR-22-0269","defect":["TR-22-0269"],"discovery":"EXTERNAL"},"title":"Weak Authentication in Login Function of USC+","x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@usom.gov.tr","DATE_PUBLIC":"2022-03-30T21:00:00.000Z","ID":"CVE-2021-45031","STATE":"PUBLIC","TITLE":"Weak Authentication in Login Function of USC+"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"USC+","version":{"version_data":[{"version_affected":"<","version_value":"3.0"}]}}]},"vendor_name":"Mepsan"}]}},"credit":[{"lang":"eng","value":"Kürşat ÇETİN"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A vulnerability in MEPSAN's USC+ before version 3.0 has a weakness in login function which lets attackers to generate high privileged accounts passwords."}]},"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-305 Authentication Bypass by Primary Weakness"}]}]},"references":{"reference_data":[{"name":"https://www.usom.gov.tr/bildirim/tr-22-0269","refsource":"CONFIRM","url":"https://www.usom.gov.tr/bildirim/tr-22-0269"}]},"solution":[{"lang":"en","value":"USC+ should be updated to the latest version provided by the vendor."}],"source":{"advisory":"TR-22-0269","defect":["TR-22-0269"],"discovery":"EXTERNAL"}}}},"cveMetadata":{"assignerOrgId":"ca940d4e-fea4-4aa2-9a58-591a58b1ce21","assignerShortName":"TR-CERT","cveId":"CVE-2021-45031","datePublished":"2022-03-30T19:55:10.646Z","dateReserved":"2021-12-13T00:00:00.000Z","dateUpdated":"2026-05-18T12:06:35.545Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2022-03-30 20:15:08","lastModifiedDate":"2026-05-18 13:16:30","problem_types":["CWE-305","NVD-CWE-noinfo","CWE-305 CWE-305 Authentication Bypass by Primary Weakness"],"metrics":{"cvssMetricV31":[{"source":"iletisim@usom.gov.tr","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.5},{"source":"nvd@nist.gov","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","baseScore":7.5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:mepsan:stawiz_usc\\+\\+:*:*:*:*:*:*:*:*","versionEndExcluding":"3.0","matchCriteriaId":"6A506660-3B82-47EF-B0FA-1C4C9E0AAB13"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"45031","Ordinal":"1","Title":"Weak Authentication in Login Function of USC+","CVE":"CVE-2021-45031","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"45031","Ordinal":"1","NoteData":"A vulnerability in MEPSAN's USC+ before version 3.0 has a weakness in login function which lets attackers to generate high privileged accounts passwords.","Type":"Description","Title":"Weak Authentication in Login Function of USC+"}]}}}