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    CVE-2026-34327

    Externally controlled reference to a resource in another sphere in Microsoft Partner Center allows an unauthorized attacker to perform spoofing over a network.

    Published:May 7, 2026
    Last Modified:May 8, 2026
    EPS:May 7, 2026
    EPSS Score:0.00136
    CVSS Score:8.2

    Affected Products

    Vendor
    Microsoft
    Product
    Partner Center

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-219 XML Routing Detour Attacks

    Related CVEs

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    CVE-2026-24303 (CVSS 9.6) — Improper certificate validation in Microsoft Partner Center allows an unauthorized attacker to elevate privile…
    CVE-2025-65041 (CVSS 10) — Improper authorization in Microsoft Partner Center allows an unauthorized attacker to elevate privileges over …
    CVE-2025-29814 (CVSS 9.3) — Improper authorization in Microsoft Partner Center allows an authorized attacker to elevate privileges over a …
    CVE-2024-49035 (CVSS 8.7) — An improper access control vulnerability in Partner.Microsoft.com allows an a unauthenticated attacker to elev…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High