# CVE-2025-27489: Azure Local Elevation of Privilege Vulnerability

CVE-2025-27489 is fixed in Azure Stack HCI OS 22H2 on 1 platform by KB5055526 (version 20348.3453), released April 8, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-27489
- Priority: High
- CVSS: 7.8 (Important)
- EPSS: 0.0062
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Apr 8, 2025
- Weakness: Improper Input Validation
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27489

## Description

<p>Improper input validation in Azure Local allows an authorized attacker to elevate privileges locally.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Azure Stack HCI OS 22H2 | 20348.3453 | [KB5055526](https://patchblox.com/security/data/fix/microsoft/kb5055526.md) | Apr 8, 2025 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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