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Vulnerability record · CVE-2026-69558 · published 20 August 2026

CVE-2026-69558: Microsoft partner center insecure direct object reference vulnerability

Microsoft · Partner Center

Authorization bypass through user-controlled key in Microsoft Partner Center allows an unauthorized attacker to disclose information over a network.

8.6 CVSS 3.1 High EPSS 0.97% · top 37.5% CWE-639 · Insecure direct object reference
8.6CVSS 3.1 base score
0.97%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
18 Oct 2026Last modified by NVD

Description

Authorization bypass through user-controlled key in Microsoft Partner Center allows an unauthorized attacker to disclose information over a network.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/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-2026-69558 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 1.4%analysed10.0CVE-2026-96207Microsoft partner center improper certificate validation vulnerabilityImproper certificate validation in Microsoft Partner Center allows an unauthorized attacker to elevate privileges over a network.EPSS 0.67%9.8CVE-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 certificate validation in Microsoft Partner Center allows an unauthorized 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 2.3%8.2CVE-2026-34327Microsoft partner center vulnerabilityExternally controlled reference to a resource in another sphere in Microsoft Partner Center allows an unauthorized attacker to perform spoofing over …EPSS 0.64%8.4CVE-2026-55255Langflow IDOR in responses endpoint allows cross-user flow executionLangflow before 1.9.1 has an insecure direct object reference in the /api/v1/responses endpoint. An authenticated attacker can supply another user's …KEVEPSS 0.89%analysed

Source: NIST National Vulnerability Database (record CVE-2026-69558), CISA KEV, FIRST EPSS (scores of 2026-11-11). This page is refreshed as NVD updates the record.