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Microsoft Discloses Elevation-of-Privilege Flaws Across Azure Services

Updated 28d agoFirst seen May 22, 20267 sources

Microsoft has published multiple Security Update Guide entries for elevation-of-privilege vulnerabilities affecting cloud services including Azure Resource Manager, Azure Entra ID, Azure AI Foundry, and Redis Enterprise. The disclosed issues include CVE-2026-47280 and CVE-2026-24304 in Azure Resource Manager, CVE-2026-24305 and CVE-2025-55241 in Azure Entra ID, CVE-2025-59271 in Redis Enterprise, and CVE-2026-35435 in Azure AI Foundry, indicating a broader set of privilege-boundary weaknesses across Microsoft-managed platforms.

Microsoft provided the most detail for CVE-2026-35435, describing it as a critical improper access control flaw in Azure AI Foundry M365 published agents that could be exploited remotely over the network without privileges or user interaction, with potential for high confidentiality impact. The company said exploitation was considered more likely, but the vulnerability had not been publicly disclosed or exploited at publication time, and the service-side issue was already fully mitigated with no customer action required; the remaining CVEs were listed with limited public detail in the update guide.

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Microsoft Discloses Elevation-of-Privilege Flaws Across Azure Services
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EVENT TIMELINE

How this story unfolded

5 events from the most recent confirmed update back to the earliest known activity.

5 EVENTS
May 21, 20261mo ago

Microsoft discloses Azure Resource Manager EoP flaw CVE-2026-47280

Microsoft published a Security Update Guide entry for CVE-2026-47280, an Azure Resource Manager elevation of privilege vulnerability.

May 7, 20262mo ago

Microsoft discloses and mitigates Azure AI Foundry flaw CVE-2026-35435

Microsoft disclosed CVE-2026-35435, a critical elevation of privilege vulnerability affecting Azure AI Foundry M365 published agents. The company said the issue had already been fully mitigated, required no customer action, and was not publicly disclosed or exploited at publication.

Mar 5, 20264mo ago

Microsoft discloses ACI Confidential Containers EoP flaw CVE-2026-23651

Microsoft published a Security Update Guide entry for CVE-2026-23651, an elevation of privilege vulnerability affecting Microsoft ACI Confidential Containers.

CVE-2026-23651 - Security Update Guide - Microsoft - Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability
Jan 22, 20265mo ago

Microsoft discloses Azure Resource Manager EoP flaw CVE-2026-24304

Microsoft published a Security Update Guide entry for CVE-2026-24304, an Azure Resource Manager elevation of privilege vulnerability.

Microsoft discloses Azure Entra ID EoP flaw CVE-2026-24305

Microsoft published a Security Update Guide entry for CVE-2026-24305, an Azure Entra ID elevation of privilege vulnerability.

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Microsoft Discloses Elevation-of-Privilege Flaws Across Azure Services | Mallory