{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Software Appliance", "vendor": "Veeam", "versions": [{"lessThan": "13.0.1", "status": "affected", "version": "13.0.1", "versionType": "semver"}]}], "source": "support@hackerone.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:veeam:veeam_backup_\\&_replication:*:*:*:*:*:*:*:*", "matchCriteriaId": "9F7C6B2B-8DFE-4FF7-A990-04BB209D5031", "versionEndIncluding": "13.0.1.1071", "versionStartIncluding": "13.0.0.496", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability allowing an authenticated user with the Backup Administrator role to perform remote code execution (RCE) in high availability (HA) deployments of Veeam Backup & Replication."}, {"lang": "es", "value": "Una vulnerabilidad que permite a un usuario autenticado con el rol de Administrador de Copias de Seguridad realizar ejecuci\u00f3n remota de c\u00f3digo (RCE) en implementaciones de alta disponibilidad (HA) de Veeam Backup & Replication."}], "id": "CVE-2026-21671", "lastModified": "2026-06-17T10:18:53.893", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 6.0, "source": "support@hackerone.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-21671", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-13T03:55:47.111082Z", "version": "2.0.3"}}]}, "published": "2026-03-12T15:16:13.630", "references": [{"source": "support@hackerone.com", "tags": ["Vendor Advisory"], "url": "https://www.veeam.com/kb4831"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-94"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-693"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}