CVE-2026-56163: CWE-306: Missing Authentication for Critical Function in Microsoft Azure Kubernetes Service
Missing authentication for critical function in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-56163) involves missing authentication for a critical function in Microsoft Azure Kubernetes Service, enabling an attacker without prior privileges to elevate their privileges remotely. The CVSS 3.1 vector indicates network attack vector, no required privileges or user interaction, and complete impact on confidentiality, integrity, and availability. The vendor has issued an official fix and manages remediation for this cloud-hosted service.
Potential Impact
An attacker can exploit this vulnerability remotely without authentication or user interaction to gain elevated privileges, potentially compromising the confidentiality, integrity, and availability of the Azure Kubernetes Service environment.
Mitigation Recommendations
Microsoft has provided an official fix for this vulnerability. As this is a cloud service, Microsoft manages the remediation server-side. Users should refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56163 for detailed guidance and ensure their Azure Kubernetes Service instances are updated accordingly.
CVE-2026-56163: CWE-306: Missing Authentication for Critical Function in Microsoft Azure Kubernetes Service
Description
Missing authentication for critical function in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over a network.
CVSS v3.1
Score 10.0critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-56163) involves missing authentication for a critical function in Microsoft Azure Kubernetes Service, enabling an attacker without prior privileges to elevate their privileges remotely. The CVSS 3.1 vector indicates network attack vector, no required privileges or user interaction, and complete impact on confidentiality, integrity, and availability. The vendor has issued an official fix and manages remediation for this cloud-hosted service.
Potential Impact
An attacker can exploit this vulnerability remotely without authentication or user interaction to gain elevated privileges, potentially compromising the confidentiality, integrity, and availability of the Azure Kubernetes Service environment.
Mitigation Recommendations
Microsoft has provided an official fix for this vulnerability. As this is a cloud service, Microsoft manages the remediation server-side. Users should refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56163 for detailed guidance and ensure their Azure Kubernetes Service instances are updated accordingly.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-19T13:53:31.988Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56163","vendor":"Microsoft"}]
Threat ID: 6a637ff99c2644c7f8203e1c
Added to database: 07/24/2026, 15:08:41 UTC
Last enriched: 08/15/2026, 13:37:37 UTC
Last updated: 09/08/2026, 01:27:03 UTC
Views: 228
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