What’s Vulnerable › Vulnerabilities

CVE-2026-34327: Microsoft Partner Center Spoofing Vulnerability

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-07 · updated 2026-10-26
• Weakness: CWE-610

Description

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

Affected products

• Microsoft Partner Center: all versions
• Microsoft Partner Center: all versions

References

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

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