{"api_version":"1","generated_at":"2026-04-23T09:39:43+00:00","cve":"CVE-2021-21825","urls":{"html":"https://cve.report/CVE-2021-21825","api":"https://cve.report/api/cve/CVE-2021-21825.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-21825","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-21825"},"summary":{"title":"CVE-2021-21825","description":"A heap-based buffer overflow vulnerability exists in the XML Decompression PlainTextUncompressor::UncompressItem functionality of AT&T Labs’ Xmill 0.7. A specially crafted XMI file can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability.","state":"PUBLIC","assigner":"talos-cna@cisco.com","published_at":"2021-08-18 13:15:00","updated_at":"2022-05-31 21:58:00"},"problem_types":["CWE-787"],"metrics":[],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1290","name":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1290","refsource":"MISC","tags":[],"title":"TALOS-2021-1290 ||  Cisco Talos Intelligence Group - Comprehensive Threat Intelligence","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-21825","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21825","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"21825","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"att","cpe5":"xmill","cpe6":"0.7","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-21825","ASSIGNER":"talos-cna@cisco.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"AT&T","version":{"version_data":[{"version_value":"AT&T Labs Xmill 0.7, Schneider Electric EcoStruxure Control Expert 15"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-122: Heap-based Buffer Overflow"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1290","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1290"}]},"description":{"description_data":[{"lang":"eng","value":"A heap-based buffer overflow vulnerability exists in the XML Decompression PlainTextUncompressor::UncompressItem functionality of AT&T Labs’ Xmill 0.7. A specially crafted XMI file can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability."}]},"impact":{"cvss":{"baseScore":8.1,"baseSeverity":"High","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"}}},"nvd":{"publishedDate":"2021-08-18 13:15:00","lastModifiedDate":"2022-05-31 21:58:00","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:att:xmill:0.7:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"21825","Ordinal":"196514","Title":"CVE-2021-21825","CVE":"CVE-2021-21825","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"21825","Ordinal":"1","NoteData":"A heap-based buffer overflow vulnerability exists in the XML Decompression PlainTextUncompressor::UncompressItem functionality of AT&T Labs’ Xmill 0.7. A specially crafted XMI file can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"21825","Ordinal":"2","NoteData":"2021-08-18","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"21825","Ordinal":"3","NoteData":"2021-08-18","Type":"Other","Title":"Modified"}]}}}