What is the CVSS score of CVE-2025-66327?

CVE-2025-66327 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of Harmonyos are affected by CVE-2025-66327?

CVE-2025-66327 presents moderate security risk, a race condition vulnerability rated CVSS 7.1. Exploitation could compromise the security of affected deployments.

How to fix or mitigate CVE-2025-66327?

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

Harmonyos CVE-2025-66327

EUVD-2025-201674 HIGH

Race Condition (CWE-362)

2025-12-08 psirt@huawei.com

Information Disclosure Race Condition Harmonyos

7.1

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 17:54 euvd

EUVD-2025-201674

Analysis Generated

Mar 15, 2026 - 17:54 vuln.today

CVE Published

Dec 08, 2025 - 09:15 nvd

HIGH 7.1

DescriptionNVD

Race condition vulnerability in the network module. Impact: Successful exploitation of this vulnerability may affect service confidentiality.

Analysis

Race condition vulnerability in the network module. Impact: Successful exploitation of this vulnerability may affect service confidentiality.

Technical ContextAI

A race condition occurs when the behavior of software depends on the timing of events, such as the order of execution of threads or processes.

RemediationAI

Use proper synchronization mechanisms (locks, mutexes, atomic operations). Implement file locking for filesystem operations. Avoid TOCTOU patterns.

CVE-2025-66327 vulnerability details – vuln.today

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Harmonyos CVE-2025-66327

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

Analysis

Technical ContextAI

RemediationAI

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External POC / Exploit Code