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CVE-2026-106078

Quick assessment

Affected
Veeam Backup for Microsoft 365
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

该漏洞允许未认证的攻击者通过伪造的联合令牌绕过 REST API 身份验证，从而从那些未调用 Veeam Backup for Microsoft 365 备份服务的 REST API 端点获取响应。

CVSS 6.9 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Veeam Backup for Microsoft 365 8.0≤ 8.6.0.1102 affected
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I. Basic Information for CVE-2026-106078

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Veeam Backup for Microsoft 365 8.0 ~ 8.6.0.1102 -

II. Public POCs for CVE-2026-106078

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-106078

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Other References for CVE-2026-106078 (1)

Same Patch Batch · Veeam · 2026-10-27 · 9 CVEs total

CVE-2026-108142 9.1 CRITICAL CDP Coordinator 服务未授权绕过漏洞
CVE-2026-106076 9.0 CRITICAL Veeam Backup for Microsoft 365 SQL 注入漏洞
CVE-2026-107671 8.5 HIGH 管理员凭据可全局禁用多因素认证绕过漏洞
CVE-2026-106077 8.3 HIGH Veeam Backup for Microsoft 365 任意文件读取漏洞
CVE-2026-105477 7.3 HIGH Veeam Agent for Linux 本地提权漏洞
CVE-2026-108141 5.9 MEDIUM Nas 备份服务相对路径遍历漏洞
CVE-2026-108140 5.9 MEDIUM 备份服务器相对路径遍历漏洞（Restore Operator 角色）
CVE-2025-64394 4.3 MEDIUM Veeam Backup for Microsoft 365 安装时提权漏洞

IV. Related Vulnerabilities

Same product: Backup for Microsoft 365
Same vendor: Veeam
Same weakness: CWE-347