{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Backup and Replication", "vendor": "Veeam", "versions": [{"lessThan": "12.3.2", "status": "affected", "version": "12.3.2", "versionType": "semver"}]}], "source": "support@hackerone.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:veeam:veeam_backup_\\&_replication:*:*:*:*:*:*:*:*", "matchCriteriaId": "7C1376E5-9691-4087-B594-B03F061BE3C8", "versionEndExcluding": "12.3.2.4465", "versionStartIncluding": "12.0.0.1402", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability allowing an authenticated domain user to bypass restrictions and manipulate arbitrary files on a Backup Repository."}, {"lang": "es", "value": "Una vulnerabilidad que permite a un usuario de dominio autenticado eludir restricciones y manipular archivos arbitrarios en un Repositorio de Copias de Seguridad."}], "id": "CVE-2026-21668", "lastModified": "2026-06-17T10:18:53.573", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "support@hackerone.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-21668", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-13T03:55:45.731995Z", "version": "2.0.3"}}]}, "published": "2026-03-12T15:16:13.260", "references": [{"source": "support@hackerone.com", "tags": ["Vendor Advisory"], "url": "https://www.veeam.com/kb4830"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-693"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}