EUVD-2026-73168
GHSA-g4cc-fmmc-jp7p
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-reachable cross-domain policy flaw; no attacker credentials needed but victim must interact (UI:R); full privilege escalation impact on Arc SQL Server Extension.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Permissive cross-domain policy with untrusted domains in Azure Arc allows an unauthorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation via permissive cross-domain policy in the Azure Arc SQL Server Extension (versions < 1.1.3518.465) allows a remote unauthenticated attacker to leverage a victim's authenticated session to make cross-origin API calls and elevate privileges over the network. The flaw stems from an overly permissive CORS/cross-domain policy that trusts untrusted external domains, enabling attacker-controlled pages to issue privileged requests on behalf of a visiting authenticated user. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated Azure Arc SQL Server Extension user (with sufficient privileges to be a meaningful target) to visit an attacker-controlled web page or resource while their authenticated session is active - satisfying the UI:R requirement in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) is broadly consistent with the described mechanism: a network-reachable cross-domain policy flaw requiring victim interaction (UI:R) but no attacker privileges. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade the Azure Arc SQL Server Extension to version 1.1.3518.465 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all instances of Azure Arc SQL Server Extension in your environment and verify their current version numbers. …
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Same weakness CWE-89 – SQL Injection
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External POC / Exploit Code
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