CVE-2026-34866

Out‑of‑Bounds Write in HarmonyOS WEB Module Leads to Availability and Confidentiality Impact

Published Apr 13, 2026 CVSS 3.1 · 5.1 Medium EPSS < 1% KEV · Not listed
Description
Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:o:huawei:harmonyos:6.0.0:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Out‑of‑Bounds Write in HarmonyOS WEB Module Leads to Availability and Confidentiality Impact
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Huawei
Huawei harmonyos
Vendors & Products Huawei
Huawei harmonyos
Type Values Removed Values Added
Description Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.
Weaknesses CWE-120
References
Metrics cvssV3_1

{'score': 5.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
huawei
Published
Updated
Apr 13, 2026, 1:07 PM
Reserved
Mar 31, 2026, 1:11 AM
Status
Analyzed
Published
Apr 13, 2026, 7:16 AM
Modified
Oct 26, 2026, 9:10 PM