Out-of-Bounds Write Vulnerability in Huawei File System
CVE-2026-34863

6.7MEDIUM

Key Information:

Vendor

Huawei
Status
Harmonyos
Vendor
CVE Published:
13 April 2026

What is CVE-2026-34863?

An out-of-bounds write vulnerability has been identified in Huawei's file system, which allows an attacker to write data outside the boundaries set in memory allocations. This flaw can be exploited to manipulate system behavior, potentially compromising the availability of the affected system and leading to unintended application crashes or service interruptions.

Affected Version(s)

HarmonyOS 6.0.0

HarmonyOS 5.1.0

References

https://consumer.huawei.com/en/support/bulletin/2026/4/

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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