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Vulnerability record · CVE-2026-34327 · published 7 May 2026

CVE-2026-34327: Microsoft partner center vulnerability

Microsoft · Partner Center

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

8.2 CVSS 3.1 High EPSS 0.60% · top 53.3% CWE-610 · CWE-610
8.2CVSS 3.1 base score
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-49035Microsoft Partner Center improper access control allows privilege elevationPartner.Microsoft.com contains an improper access control flaw (CWE-269) that lets an unauthenticated attacker elevate privileges over the network. M…KEVEPSS 1.3%analysed9.8CVE-2025-65041Microsoft partner center improper authorization vulnerabilityImproper authorization in Microsoft Partner Center allows an unauthorized attacker to elevate privileges over a network.EPSS 0.77%9.6CVE-2026-24303Microsoft partner center improper access control vulnerabilityImproper access control in Microsoft Partner Center allows an authorized attacker to elevate privileges over a network.EPSS 0.39%8.8CVE-2025-29814Microsoft partner center improper input validation vulnerabilityImproper authorization in Microsoft Partner Center allows an authorized attacker to elevate privileges over a network.EPSS 2.2%8.6CVE-2026-69558Microsoft partner center insecure direct object reference vulnerabilityAuthorization bypass through user-controlled key in Microsoft Partner Center allows an unauthorized attacker to disclose information over a network.EPSS 0.97%7.1CVE-2025-0111PAN-OS authenticated file read via management web interfacePAN-OS contains an authenticated file read vulnerability that lets a user with network access to the management web interface read files on the PAN-O…KEVEPSS 2.0%analysed9.1CVE-2022-27593QNAP Photo Station external resource reference allows system file modificationQNAP Photo Station on NAS devices contains an externally controlled reference to a resource flaw (CWE-610) that lets an attacker modify system files.…KEVEPSS 88%analysed

Source: NIST National Vulnerability Database (record CVE-2026-34327), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.