What is the CVSS score of CVE-2025-21198?

CVE-2025-21198 has a CVSS 3.1 base score of 9.0 (Critical). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Which versions of Hpc Pack 2016 are affected by CVE-2025-21198?

CVE-2025-21198 presents critical security risk, a missing authentication vulnerability rated CVSS 9.0.. A patch is available.

How to fix or mitigate CVE-2025-21198?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Audit authentication configurations and rotate any potentially compromised credentials.

Hpc Pack 2016 CVE-2025-21198

CRITICAL

Missing Authentication for Critical Function (CWE-306)

2025-02-11 secure@microsoft.com

Microsoft RCE Authentication Bypass Hpc Pack 2016 Hpc Pack 2019

9.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.0 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:26 vuln.today

Patch released

Mar 28, 2026 - 18:26 nvd

Patch available

CVE Published

Feb 11, 2025 - 18:15 nvd

CRITICAL 9.0

DescriptionCVE.org

Microsoft High Performance Compute (HPC) Pack Remote Code Execution Vulnerability

AnalysisAI

Microsoft High Performance Compute (HPC) Pack Remote Code Execution Vulnerability. Rated critical severity (CVSS 9.0), this vulnerability is low attack complexity. This Missing Authentication for Critical Function vulnerability could allow attackers to access critical functionality without authentication.

Technical ContextAI

This vulnerability is classified as Missing Authentication for Critical Function (CWE-306), which allows attackers to access critical functionality without authentication. Microsoft High Performance Compute (HPC) Pack Remote Code Execution Vulnerability Affected products include: Microsoft Hpc Pack 2016, Microsoft Hpc Pack 2019.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Require authentication for all sensitive operations, implement defense in depth.