{"api_version":"1","generated_at":"2026-04-23T10:42:22+00:00","cve":"CVE-2021-38389","urls":{"html":"https://cve.report/CVE-2021-38389","api":"https://cve.report/api/cve/CVE-2021-38389.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-38389","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-38389"},"summary":{"title":"CVE-2021-38389","description":"Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code.","state":"PUBLIC","assigner":"ics-cert@hq.dhs.gov","published_at":"2021-10-18 13:15:00","updated_at":"2021-10-20 22:17:00"},"problem_types":["CWE-787"],"metrics":[],"references":[{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02","name":"https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02","refsource":"MISC","tags":[],"title":"Advantech WebAccess | CISA","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-38389","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38389","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"LEGACY","value":"Natnael Samson, @NattiSamson, working with Trend Micro’s Zero Day Initiative, reported these vulnerabilities to CISA.","lang":""}],"nvd_cpes":[{"cve_year":"2021","cve_id":"38389","vulnerable":"1","versionEndIncluding":"9.0.2","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"advantech","cpe5":"webaccess","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"ics-cert@hq.dhs.gov","DATE_PUBLIC":"2021-10-12T19:15:00.000Z","ID":"CVE-2021-38389","STATE":"PUBLIC","TITLE":"Advantech WebAccess"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"WebAccess","version":{"version_data":[{"version_affected":"<=","version_name":"All","version_value":"9.02"}]}}]},"vendor_name":"Advantech"}]}},"credit":[{"lang":"eng","value":"Natnael Samson, @NattiSamson, working with Trend Micro’s Zero Day Initiative, reported these vulnerabilities to CISA."}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code."}]},"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"STACK-BASED BUFFER OVERFLOW CWE-121"}]}]},"references":{"reference_data":[{"refsource":"MISC","url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02","name":"https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02"}]},"solution":[{"lang":"eng","value":"Advantech has released Version 9.1.1 to address the stack-based buffer overflow vulnerability."}],"source":{"advisory":"ICSA-21-285-02","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2021-10-18 13:15:00","lastModifiedDate":"2021-10-20 22:17:00","problem_types":["CWE-787"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*","versionEndIncluding":"9.0.2","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"38389","Ordinal":"214051","Title":"CVE-2021-38389","CVE":"CVE-2021-38389","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"38389","Ordinal":"1","NoteData":"Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"38389","Ordinal":"2","NoteData":"2021-10-18","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"38389","Ordinal":"3","NoteData":"2021-10-18","Type":"Other","Title":"Modified"}]}}}