What is CVE-2025-66330?

CVE-2025-66330 is a medium-severity vulnerability in Huawei Harmonyos, classified under Information Disclosure. CVSS score: 4.9/10. Published 2025-12-08.

How severe is CVE-2025-66330?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Information disclosure in Huawei Harmonyos

CVE-2025-66330

App lock verification bypass vulnerability in the file management app. Impact: Successful exploitation of this vulnerability may affect service confidentiality.

Vulnerability class: Information Disclosure

Published 2025-12-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N.

EPSS exploit prediction

EPSS: 0.001 (0.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 0th percentile — 0.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Huawei Harmonyos — versions 5.1.0, 5.0.1, 6.0.0

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

consumer.huawei.com/en/support/bulletin/2025/12/ (Vendor Advisory)

Frequently asked questions

What is CVE-2025-66330?: CVE-2025-66330 is a medium-severity vulnerability in Huawei Harmonyos, classified under Information Disclosure. CVSS score: 4.9/10. Published 2025-12-08.
How severe is CVE-2025-66330?: Medium severity. CVSS v3 base score is 4.9 out of 10.