What is the CVSS score of CVE-2025-27489?

CVE-2025-27489 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.9%.

Which versions of Azure Stack Hci 22H2 are affected by CVE-2025-27489?

Organizations using Improper input validation in Azure Local face notable risk from CVE-2025-27489, a input validation vulnerability rated CVSS 7.8.

How to fix or mitigate CVE-2025-27489?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

Azure Stack Hci 22H2 CVE-2025-27489

HIGH

Improper Input Validation (CWE-20)

2025-04-08 secure@microsoft.com

Microsoft Information Disclosure Azure Stack Hci 22H2 Azure Stack Hci 23H2

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:35 vuln.today

CVE Published

Apr 08, 2025 - 18:15 nvd

HIGH 7.8

DescriptionCVE.org

Improper input validation in Azure Local allows an authorized attacker to elevate privileges locally.

AnalysisAI

Improper input validation in Azure Local allows an authorized attacker to elevate privileges locally. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-20. Improper input validation in Azure Local allows an authorized attacker to elevate privileges locally. Affected products include: Microsoft Azure Stack Hci 22H2, Microsoft Azure Stack Hci 23H2.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.