{"api_version":"1","generated_at":"2026-07-23T21:14:58+00:00","cve":"CVE-2021-38991","urls":{"html":"https://cve.report/CVE-2021-38991","api":"https://cve.report/api/cve/CVE-2021-38991.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-38991","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-38991"},"summary":{"title":"CVE-2021-38991","description":"IBM AIX 7.0, 7.1, 7.2, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the lscore command which could lead to code execution. IBM X-Force ID: 212953.","state":"PUBLIC","assigner":"psirt@us.ibm.com","published_at":"2022-01-11 17:15:00","updated_at":"2022-07-12 17:42:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/212953","name":"ibm-aix-cve202138991-code-exec (212953)","refsource":"XF","tags":[],"title":"IBM X-Force Exchange","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.ibm.com/support/pages/node/6538952","name":"https://www.ibm.com/support/pages/node/6538952","refsource":"CONFIRM","tags":[],"title":"Security Bulletin: Vulnerability in lscore affects AIX (CVE-2021-38991)","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-38991","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38991","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"38991","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"ibm","cpe5":"aix","cpe6":"7.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"38991","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"ibm","cpe5":"aix","cpe6":"7.1","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"38991","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"ibm","cpe5":"aix","cpe6":"7.2","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"38991","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"ibm","cpe5":"vios","cpe6":"3.1","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-38991","qid":"330094","title":"IBM Advanced Interactive eXecutive (AIX) lscore Code Execution Vulnerability (lscore_advisory)"}]},"source_records":{"cve_program":{"problemtype":{"problemtype_data":[{"description":[{"value":"Gain Privileges","lang":"eng"}]}]},"data_type":"CVE","CVE_data_meta":{"ASSIGNER":"psirt@us.ibm.com","DATE_PUBLIC":"2022-01-10T00:00:00","ID":"CVE-2021-38991","STATE":"PUBLIC"},"data_version":"4.0","data_format":"MITRE","affects":{"vendor":{"vendor_data":[{"vendor_name":"IBM","product":{"product_data":[{"version":{"version_data":[{"version_value":"7.1"},{"version_value":"7.2"},{"version_value":"7.3"}]},"product_name":"AIX"},{"version":{"version_data":[{"version_value":"3.1"}]},"product_name":"VIOS "}]}}]}},"description":{"description_data":[{"value":"IBM AIX 7.0, 7.1, 7.2, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the lscore command which could lead to code execution. IBM X-Force ID: 212953.","lang":"eng"}]},"impact":{"cvssv3":{"BM":{"PR":"N","A":"H","S":"U","AV":"L","C":"H","SCORE":"8.400","I":"H","UI":"N","AC":"L"},"TM":{"RC":"C","RL":"O","E":"U"}}},"references":{"reference_data":[{"refsource":"CONFIRM","name":"https://www.ibm.com/support/pages/node/6538952","url":"https://www.ibm.com/support/pages/node/6538952","title":"IBM Security Bulletin 6538952 (AIX)"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/212953","name":"ibm-aix-cve202138991-code-exec (212953)","refsource":"XF","title":"X-Force Vulnerability Report"}]}},"nvd":{"publishedDate":"2022-01-11 17:15:00","lastModifiedDate":"2022-07-12 17:42:00","problem_types":["NVD-CWE-noinfo"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:P/A:P","accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":4.6},"severity":"MEDIUM","exploitabilityScore":3.9,"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:o:ibm:aix:7.1:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:ibm:aix:7.2:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:ibm:vios:3.1:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:ibm:aix:7.0:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"38991","Ordinal":"214669","Title":"CVE-2021-38991","CVE":"CVE-2021-38991","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"38991","Ordinal":"1","NoteData":"IBM AIX 7.0, 7.1, 7.2, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the lscore command which could lead to code execution. IBM X-Force ID: 212953.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"38991","Ordinal":"2","NoteData":"2022-01-11","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"38991","Ordinal":"3","NoteData":"2022-01-11","Type":"Other","Title":"Modified"}]}}}