CVE-2026-34327

HIGH

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

CVSS v3.1 Score

8.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Published: 5/7/2026Modified: 5/8/2026

Related Intelligence (2)

CRITICALAi

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Microsoft is publishing 137 vulnerabilities on May 2026 Patch Tuesday . Microsoft is not aware of exploitation in the wild or public disclosure for any of these vulnerabilities. So far this month, Microsoft has provided patches to address 133 browser vulnerabilities, which are not included in the Patch Tuesday count above. Windows Netlogon: critical RCE Anyone responsible for securing a domain con

CVE-2026-41089CVE-2020-1472
Rapid7
HIGHVulnerability

NVD HIGH: CVE-2026-34327 — Externally controlled reference to a resource in another sphere in Microsoft Par...

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

CVE-2026-34327
NIST NVD

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34327Vendor Advisory