What is CVE-2026-34858?

CVE-2026-34858 is a medium-severity vulnerability in Huawei Harmonyos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.1/10. Published 2026-04-13.

How severe is CVE-2026-34858?

Medium severity. CVSS v3 base score is 4.1 out of 10.

Vulnerability in Huawei Harmonyos

CVE-2026-34858

UAF vulnerability in the communication module. Impact: Successful exploitation of this vulnerability may affect availability.

Vulnerability class: Race Condition

EPSS: 0.000 (0.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H.

Affected products

Huawei Harmonyos — versions 6.0.0, 5.1.0

Weakness classification (CWE)

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

References

consumer.huawei.com/en/support/bulletin/2026/4/
consumer.huawei.com/en/support/bulletinvision/2026/4/
consumer.huawei.com/en/support/bulletinwearables/2026/4/

Frequently asked questions

What is CVE-2026-34858?: CVE-2026-34858 is a medium-severity vulnerability in Huawei Harmonyos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.1/10. Published 2026-04-13.
How severe is CVE-2026-34858?: Medium severity. CVSS v3 base score is 4.1 out of 10.