What is CVE-2025-54638?

CVE-2025-54638 is a medium-severity vulnerability in Huawei Harmonyos, classified under Deserialization of Untrusted Data. CVSS score: 5.5/10. Published 2025-08-06.

How severe is CVE-2025-54638?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2025-54638 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Huawei Harmonyos

CVE-2025-54638

Issue of inconsistent read/write serialization in the ad module. Impact: Successful exploitation of this vulnerability may affect the availability of the ad service.

Vulnerability class: Insecure Deserialization

EPSS: 0.001 (0.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Huawei Harmonyos — versions 5.1.0, 5.0.1

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

psirt@huawei.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-54638?: CVE-2025-54638 is a medium-severity vulnerability in Huawei Harmonyos, classified under Deserialization of Untrusted Data. CVSS score: 5.5/10. Published 2025-08-06.
How severe is CVE-2025-54638?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2025-54638 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.