What is CVE-2026-26141?

CVE-2026-26141 is a high-severity vulnerability in Microsoft Azure Automation Hybrid Worker Windows Extension, classified under Improper Authentication. CVSS score: 7.8/10. Published 2026-03-10.

How severe is CVE-2026-26141?

High severity. CVSS v3 base score is 7.8 out of 10.

Auth bypass in Microsoft Azure Automation Hybrid Worker Windows Extension

CVE-2026-26141

Improper authentication in Azure Arc allows an authorized attacker to elevate privileges locally.

Vulnerability class: Broken Authentication

EPSS: 0.001 (19.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.

Affected products

Microsoft Azure Automation Hybrid Worker Windows Extension — versions 1.0.0

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

Hybrid Worker Extension (Arc‑enabled Windows VMs) Elevation of Privilege Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-26141?: CVE-2026-26141 is a high-severity vulnerability in Microsoft Azure Automation Hybrid Worker Windows Extension, classified under Improper Authentication. CVSS score: 7.8/10. Published 2026-03-10.
How severe is CVE-2026-26141?: High severity. CVSS v3 base score is 7.8 out of 10.