{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-64394","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","state":"PUBLISHED","assignerShortName":"hackerone","dateReserved":"2025-10-31T15:00:01.447Z","datePublished":"2026-10-27T16:16:58.979Z","dateUpdated":"2026-10-27T16:16:58.979Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A vulnerability allowing a low-privileged local user to write arbitrary files with SYSTEM privileges during the installation of Veeam Backup for Microsoft 365, which can lead to privilege escalation or denial of service."}],"affected":[{"defaultStatus":"unaffected","vendor":"Veeam","product":"Backup for Microsoft 365","versions":[{"version":"8.0","status":"affected","lessThanOrEqual":"8.6.0.1102","versionType":"semver"}]}],"references":[{"url":"https://www.veeam.com/kb4957"}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","baseScore":4.3,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"type":"CWE","lang":"en","cweId":"CWE-1386","description":"CWE-1386 Insecure Operation on Windows Junction / Mount Point"}]}],"providerMetadata":{"orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","shortName":"hackerone","dateUpdated":"2026-10-27T16:16:58.979Z"}}}}