CVE-2026-26141: CWE-287: Improper Authentication in Microsoft Azure Automation Hybrid Worker Windows Extension
Improper authentication in Azure Arc allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-26141) in the Azure Automation Hybrid Worker Windows Extension is classified as CWE-287 (Improper Authentication). It enables an attacker with some level of authorization to escalate their privileges on the local system. The CVSS v3.1 base score is 7.8, indicating high severity, with impacts on confidentiality, integrity, and availability. The vulnerability affects version 1.0.0 of the extension. Microsoft has published an official fix and manages remediation for this cloud service, as detailed in their advisory.
Potential Impact
An authorized attacker can exploit this improper authentication vulnerability to elevate privileges locally, potentially gaining higher access rights than intended. This can lead to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Since this is a cloud-hosted service, Microsoft manages the remediation server-side. Users should follow the guidance in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26141 to ensure their environment is updated and protected.
CVE-2026-26141: CWE-287: Improper Authentication in Microsoft Azure Automation Hybrid Worker Windows Extension
Description
Improper authentication in Azure Arc allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-26141) in the Azure Automation Hybrid Worker Windows Extension is classified as CWE-287 (Improper Authentication). It enables an attacker with some level of authorization to escalate their privileges on the local system. The CVSS v3.1 base score is 7.8, indicating high severity, with impacts on confidentiality, integrity, and availability. The vulnerability affects version 1.0.0 of the extension. Microsoft has published an official fix and manages remediation for this cloud service, as detailed in their advisory.
Potential Impact
An authorized attacker can exploit this improper authentication vulnerability to elevate privileges locally, potentially gaining higher access rights than intended. This can lead to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Since this is a cloud-hosted service, Microsoft manages the remediation server-side. Users should follow the guidance in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26141 to ensure their environment is updated and protected.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T16:24:51.134Z
- 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-2026-26141","vendor":"Microsoft"}]
Threat ID: 69b05632ea502d3aa87d6b62
Added to database: 03/10/2026, 17:34:42 UTC
Last enriched: 06/19/2026, 20:32:55 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 142
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