CVE-2026-34863 Details
Description
Out-of-bounds write vulnerability in the file system. Impact: Successful exploitation of this vulnerability may affect availability.
A vulnerability allowing out-of-bounds write operations has been identified in the file system of Huawei's HarmonyOS and EMUI. This vulnerability affects several different versions and ranges of HarmonyOS, as well as EMUI 15.0.0 and earlier versions. Successful exploitation of this vulnerability may impact the operating system's availability.
Users can refer to the Huawei Security Bulletin for April 2026 for guidance on applying the latest security updates that address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://consumer.huawei.com/en/support/bulletin/2026/4/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| huawei harmonyos | 5.1.0 6.0.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 15, 2026 | Initial Analysis | [email protected] |
| Apr 13, 2026 | New CVE Received | [email protected] |