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TI-2026-26614 Aliases CVE-2026-34327GHSA-jvw8-2m5m-9449

Microsoft Partner Center Spoofing Vulnerability

Priority MEDIUM 43CWE-610Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
High · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00638 50th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Partner Center-—No fix listedCNA
  • Microsoft Partner Center VendorMicrosoft Affected - Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:partner_center:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:a:microsoft:partner_center:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Spoofing
Exploited
No
Publicly disclosed
No
Exploitability
—

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34327
  2. 2026-10-03 Alias added: GHSA-jvw8-2m5m-9449
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Patch 1

  • TI-2024-32706 Partner.Microsoft.Com Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-69838 Improper certificate validation in Microsoft Partner Center CVSS 3.1CRITICAL 10.0
  • TI-2025-40224 Microsoft Partner Center Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2025-21222 Microsoft Partner Center Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.3
  • TI-2026-48868 Microsoft Partner Center Information Disclosure Vulnerability CVSS 3.1HIGH 8.6
  • TI-2026-19587 Microsoft Partner Center Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences