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    8 vulnerabilities found for Backup for Microsoft 365 by Veeam

    CVE-2026-106078 (GCVE-0-2026-106078)

    Vulnerability from nvd – Published: 2026-10-27 16:16 – Updated: 2026-10-27 16:16
    VLAI
    Summary
    A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a forged federation token and receive responses from REST API endpoints that do not call the Veeam Backup for Microsoft 365 backup service.
    CWE
    • CWE-347 - Improper Verification of Cryptographic Signature
    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
    Veeam Backup for Microsoft 365 Affected: 8.0 , ≤ 8.6.0.1102 (semver)
    Create a notification for this product.
    Show details on NVD website

    {
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          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Backup for Microsoft 365",
              "vendor": "Veeam",
              "versions": [
                {
                  "lessThanOrEqual": "8.6.0.1102",
                  "status": "affected",
                  "version": "8.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a forged federation token and receive responses from REST API endpoints that do not call the Veeam Backup for Microsoft 365 backup service."
            }
          ],
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          ],
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                }
              ]
            }
          ],
          "providerMetadata": {
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            }
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      },
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    }

    CVE-2026-106077 (GCVE-0-2026-106077)

    Vulnerability from nvd – Published: 2026-10-27 16:16 – Updated: 2026-10-27 16:16
    VLAI
    Summary
    A vulnerability allowing a user with the Veeam Backup for Microsoft 365 Administrator role to read arbitrary files on the backup server with LocalSystem privileges.
    CWE
    • CWE-863 - Incorrect Authorization
    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
    Veeam Backup for Microsoft 365 Affected: 8.0 , ≤ 8.5.0.1014 (semver)
    Create a notification for this product.
    Show details on NVD website

    {
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          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Backup for Microsoft 365",
              "vendor": "Veeam",
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                  "version": "8.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
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            {
              "lang": "en",
              "value": "A vulnerability allowing a user with the Veeam Backup for Microsoft 365 Administrator role to read arbitrary files on the backup server with LocalSystem privileges."
            }
          ],
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    }

    CVE-2026-106076 (GCVE-0-2026-106076)

    Vulnerability from nvd – Published: 2026-10-27 16:16 – Updated: 2026-10-27 16:16
    VLAI
    Summary
    A vulnerability allowing an authenticated organization-transfer peer to inject SQL into the configuration database of the source Veeam Backup for Microsoft 365 server, leading to cross-tenant read and write of configuration data and remote code execution as the PostgreSQL service account.
    CWE
    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
    Veeam Backup for Microsoft 365 Affected: 8.0 , ≤ 8.5.0.1014 (semver)
    Create a notification for this product.
    Show details on NVD website

    {
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                  "versionType": "semver"
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              ]
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          ],
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              "lang": "en",
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            }
          ],
          "metrics": [
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              }
            }
          ],
          "problemTypes": [
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              "descriptions": [
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                  "cweId": "CWE-89",
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                }
              ]
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          ],
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        "dateReserved": "2026-10-06T15:00:00.655Z",
        "dateUpdated": "2026-10-27T16:16:58.882Z",
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      },
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    }

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

    Vulnerability from nvd – 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.
    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
    Veeam Backup for Microsoft 365 Affected: 8.0 , ≤ 8.6.0.1102 (semver)
    Create a notification for this product.
    Show details on NVD website

    {
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          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Backup for Microsoft 365",
              "vendor": "Veeam",
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          ],
          "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."
            }
          ],
          "metrics": [
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    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.
    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
    Veeam Backup for Microsoft 365 Affected: 8.0 , ≤ 8.6.0.1102 (semver)
    Create a notification for this product.
    Show details on NVD website

    {
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    CVE-2026-106078 (GCVE-0-2026-106078)

    Vulnerability from cvelistv5 – Published: 2026-10-27 16:16 – Updated: 2026-10-27 16:16
    VLAI
    Summary
    A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a forged federation token and receive responses from REST API endpoints that do not call the Veeam Backup for Microsoft 365 backup service.
    CWE
    • CWE-347 - Improper Verification of Cryptographic Signature
    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
    Veeam Backup for Microsoft 365 Affected: 8.0 , ≤ 8.6.0.1102 (semver)
    Create a notification for this product.
    Show details on NVD website

    {
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    CVE-2026-106077 (GCVE-0-2026-106077)

    Vulnerability from cvelistv5 – Published: 2026-10-27 16:16 – Updated: 2026-10-27 16:16
    VLAI
    Summary
    A vulnerability allowing a user with the Veeam Backup for Microsoft 365 Administrator role to read arbitrary files on the backup server with LocalSystem privileges.
    CWE
    • CWE-863 - Incorrect Authorization
    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
    Veeam Backup for Microsoft 365 Affected: 8.0 , ≤ 8.5.0.1014 (semver)
    Create a notification for this product.
    Show details on NVD website

    {
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    CVE-2026-106076 (GCVE-0-2026-106076)

    Vulnerability from cvelistv5 – Published: 2026-10-27 16:16 – Updated: 2026-10-27 16:16
    VLAI
    Summary
    A vulnerability allowing an authenticated organization-transfer peer to inject SQL into the configuration database of the source Veeam Backup for Microsoft 365 server, leading to cross-tenant read and write of configuration data and remote code execution as the PostgreSQL service account.
    CWE
    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
    Veeam Backup for Microsoft 365 Affected: 8.0 , ≤ 8.5.0.1014 (semver)
    Create a notification for this product.
    Show details on NVD website

    {
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          ],
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