What is CVE-2025-54630?

CVE-2025-54630 is a medium-severity vulnerability in Huawei Harmonyos, classified under Heap-based Buffer Overflow. CVSS score: 6.8/10. Published 2025-08-06.

How severe is CVE-2025-54630?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Buffer overflow in Huawei Harmonyos

CVE-2025-54630

:Vulnerability of insufficient data length verification in the DFA module. Impact: Successful exploitation of this vulnerability may affect availability.

Vulnerability class: Buffer Overflow

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

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (12.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Huawei Harmonyos — versions 5.0.1, 4.3.0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

consumer.huawei.com/en/support/bulletin/2025/8/ (Vendor Advisory)

Frequently asked questions

What is CVE-2025-54630?: CVE-2025-54630 is a medium-severity vulnerability in Huawei Harmonyos, classified under Heap-based Buffer Overflow. CVSS score: 6.8/10. Published 2025-08-06.
How severe is CVE-2025-54630?: Medium severity. CVSS v3 base score is 6.8 out of 10.