Azure Arc SQL Server Extension Elevation of Privilege Vulnerability
Published September 8, 2026Updated September 8, 2026
Source data
Overview
Permissive cross-domain policy with untrusted domains in Azure Arc allows an unauthorized attacker to elevate privileges over a network.
Impact & technical details
Elevation of Privilege
How could an attacker exploit this vulnerability? An attacker could host a specially crafted website and convince a user to visit it. When the user visits the site, it could send requests to a vulnerable service running locally on the affected system, allowing the attacker to run commands with elevated privileges. Authentication is not required, but the attack depends on the user visiting the attacker-controlled website.
What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
What version should customers install to address this vulnerability? Version 1.1.3464.439 was the first Azure extension for SQL Server version containing the security fix, but that version is no longer available. Customers should upgrade to version 1.1.3518.465 or later. Extension updates are cumulative, so later versions include the fix.
- CVSS base score
- 8.8 / 10
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Highest base score supplied by MSRC for this record; the vector belongs to that score. Ratings can vary by product. Microsoft Important is displayed as High; Moderate is displayed as Medium.
Affected products
- Azure Arc SQL Server Extension
Source guidance
Remediation
- Release Notes
At least one Microsoft vendor-fix reference is available. Check each affected product for its applicable update, prerequisites, and supported version.
GTP recommendation · Rule-based guidance
Recommended next step
Review affected Microsoft products and apply the applicable security updates through your organization's normal patch-management process. Confirm availability and prerequisites in the Microsoft advisory.
Authoritative sources & updates
Findings and update information come from the linked publishers. GTP compiles the public record and provides the recommendation above. CVSS ratings shown here come from Microsoft. NVD references provide additional public context.
Managed by GTP?
Griffin Technology Partners managed customers may receive additional environment-specific security guidance and remediation assistance through their managed services relationship.
Security bulletins are provided for informational purposes and compiled from authoritative public sources. Vulnerability applicability varies by environment. Validate affected products, configuration, compatibility requirements, and vendor guidance before making production changes.