CVE-2026-34866 — MEDIUM (5.1)

Vulnerability Description

Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.

CVSS Score

5.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Huawei	Harmonyos	6.0.0

Related Weaknesses (CWE)

CWE-120

References

https://consumer.huawei.com/en/support/bulletinwearables/2026/4/Vendor Advisory

FAQ

What is CVE-2026-34866?

CVE-2026-34866 is a vulnerability with a CVSS score of 5.1 (MEDIUM). Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.

How severe is CVE-2026-34866?

CVE-2026-34866 has been rated MEDIUM with a CVSS base score of 5.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-34866?

Check the references section above for vendor advisories and patch information. Affected products include: Huawei Harmonyos.