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Fact-check summary

Multiple security databases (Strobes, VulDB, NotCVE, PremierePC) corroborate the CVE-2026-50516 disclosure for Azure Kubernetes Service with CVSS 9.4.

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Home/Security/Microsoft Azure Kubernetes Service CVE-2026-50516 Hits CVSS 9.4
VERIFIEDBy Xavier Rivera·Tuesday, August 11, 2026 at 1:39 PM AST·1 min read

Microsoft Azure Kubernetes Service CVE-2026-50516 Hits CVSS 9.4

Microsoft disclosed CVE-2026-50516, a critical vulnerability in Azure Kubernetes Service with a CVSS score of 9.4 that allows unauthorized privilege elevation over a network. The flaw, published August 11, 2026, highlights missing authentication for a critical function and affects all listed versions.

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Microsoft Azure Kubernetes Service CVE-2026-50516 Hits CVSS 9.4
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TL;DRAI · 60 sec read

Microsoft disclosed CVE-2026-50516, a critical vulnerability in Azure Kubernetes Service that stems from missing authentication for a critical function. The flaw scores 9.4 on CVSS and allows network-based privilege escalation by unauthorized attackers. It affects all versions of the service. The NVD published the record today and Microsoft issued an advisory.

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Microsoft has disclosed a critical vulnerability in Azure Kubernetes Service that allows an unauthorized attacker to elevate privileges over a network.

A critical authentication flaw affects Azure Kubernetes Service. The vulnerability, tracked as CVE-2026-50516, stems from missing authentication for a critical function. It carries a CVSS 3.1 base score of 9.4, rated critical by Microsoft Corporation.
The vulnerability, tracked as CVE-2026-50516, stems from missing authentication for a critical function.

The vector string is listed as CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L. This indicates network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, high confidentiality impact, high integrity impact, and low availability impact.

The flaw was published today by the NVD. The CVE record was received from Microsoft Corporation on August 11, 2026. It was added to the NVD dataset the same day at 1:18:02 PM.
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Affected versions are listed as all versions of Azure Kubernetes Service with status affected. The weakness is classified under CWE-306, missing authentication for critical function.
No further mitigation steps or patch information appear in the published CVE entry.

Microsoft has published an advisory. Details are available in the update guide at msrc.microsoft.com. The record was tagged as exclusively-hosted-service.
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No further mitigation steps or patch information appear in the published CVE entry. The NVD has not yet provided its own CVSS 4.0 assessment.

EXPERT TAKE

Azure Kubernetes Service operators should check the Microsoft advisory immediately for patching guidance given the critical network-accessible privilege escalation risk.

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