CVE-2025-64394 (GCVE-0-2025-64394)

Vulnerability from cvelistv5 – Published: 2026-10-27 16:16 – Updated: 2026-10-27 16:16
VLAI
Summary
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.
Severity
4.3 (Medium)
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
CWE
  • CWE-1386 - Insecure Operation on Windows Junction / Mount Point
Assigner
hackerone CNA under the mitre root
CNA scorecard D 59/100 over 213 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Veeam Backup for Microsoft 365 Affected: 8.0 , ≤ 8.6.0.1102 (semver)
guessed Create a notification for this product.
Show details on NVD website
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    "dateReserved": "2025-10-31T15:00:01.447Z",
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        "lastModified": "2026-10-28T14:47:07.963",
        "metrics": {
          "cvssMetricV40": [
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                "Recovery": "NOT_DEFINED",
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                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
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}



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