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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
EPSS
VEX
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.
Severity
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.veeam.com/kb4957 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Veeam | Backup for Microsoft 365 |
Affected:
8.0 , ≤ 8.6.0.1102
(semver)
|
{
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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
EPSS
VEX
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.
Severity
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.veeam.com/kb4957 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Veeam | Backup for Microsoft 365 |
Affected:
8.0 , ≤ 8.5.0.1014
(semver)
|
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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
EPSS
VEX
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.
Severity
CWE
- CWE-89 - SQL Injection
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.veeam.com/kb4957 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Veeam | Backup for Microsoft 365 |
Affected:
8.0 , ≤ 8.5.0.1014
(semver)
|
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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
EPSS
VEX
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
CWE
- CWE-1386 - Insecure Operation on Windows Junction / Mount Point
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.veeam.com/kb4957 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Veeam | Backup for Microsoft 365 |
Affected:
8.0 , ≤ 8.6.0.1102
(semver)
|
{
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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
EPSS
VEX
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
CWE
- CWE-1386 - Insecure Operation on Windows Junction / Mount Point
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.veeam.com/kb4957 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Veeam | Backup for Microsoft 365 |
Affected:
8.0 , ≤ 8.6.0.1102
(semver)
|
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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
EPSS
VEX
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.
Severity
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.veeam.com/kb4957 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Veeam | Backup for Microsoft 365 |
Affected:
8.0 , ≤ 8.6.0.1102
(semver)
|
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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
EPSS
VEX
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.
Severity
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.veeam.com/kb4957 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Veeam | Backup for Microsoft 365 |
Affected:
8.0 , ≤ 8.5.0.1014
(semver)
|
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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
EPSS
VEX
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.
Severity
CWE
- CWE-89 - SQL Injection
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.veeam.com/kb4957 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Veeam | Backup for Microsoft 365 |
Affected:
8.0 , ≤ 8.5.0.1014
(semver)
|
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