What is CVE-2025-66327?

CVE-2025-66327 is a high-severity vulnerability in Huawei Harmonyos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.1/10. Published 2025-12-08.

How severe is CVE-2025-66327?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Huawei Harmonyos

CVE-2025-66327

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

Vulnerability class: Race Condition

EPSS: 0.001 (0.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Huawei Harmonyos — versions 5.1.0, 5.0.1

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

psirt@huawei.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-66327?: CVE-2025-66327 is a high-severity vulnerability in Huawei Harmonyos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.1/10. Published 2025-12-08.
How severe is CVE-2025-66327?: High severity. CVSS v3 base score is 7.1 out of 10.