CVE-2026-34863

Received Received - Intake

Out-of-Bounds Write in File System Causing Availability Impact

Publication date: 2026-04-13

Last updated on: 2026-04-15

Assigner: Huawei Technologies

Description

Out-of-bounds write vulnerability in the file system. Impact: Successful exploitation of this vulnerability may affect availability.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-04-13

Last Modified

2026-04-15

Generated

2026-07-06

AI Q&A

2026-04-13

EPSS Evaluated

2026-07-05

NVD

CVE-2026-34863

EUVD

EUVD-2026-21844

Affected Vendors & Products

Vendor	Product	Version / Range
huawei	harmonyos	5.1.0
huawei	harmonyos	6.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds write issue in the file system. It means that the software writes data outside the boundaries of allocated memory, which can lead to unpredictable behavior or system instability.

Impact Analysis

Successful exploitation of this vulnerability may affect the availability of the system, potentially causing crashes or denial of service.

Compliance Impact

The provided information does not specify how the out-of-bounds write vulnerability in the file system affects compliance with common standards and regulations such as GDPR or HIPAA.

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