What is CVE-2026-34856?

CVE-2026-34856 is a high-severity vulnerability in Huawei Harmonyos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.3/10. Published 2026-04-13.

How severe is CVE-2026-34856?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Huawei Harmonyos

CVE-2026-34856

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

Vulnerability class: Race Condition

EPSS: 0.000 (0.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.

Affected products

Huawei Harmonyos — versions 6.0.0

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/bulletinwearables/2026/4/

Frequently asked questions

What is CVE-2026-34856?: CVE-2026-34856 is a high-severity vulnerability in Huawei Harmonyos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.3/10. Published 2026-04-13.
How severe is CVE-2026-34856?: High severity. CVSS v3 base score is 7.3 out of 10.