Data disclosure and device crash via kernel overwrite
Published Apr 13, 2026 · Updated Apr 13, 2026
Out-of-bounds write in a Huawei kernel module in EMUI and HarmonyOS allows local users to compromise data confidentiality and crash devices. Huawei has not disclosed the kernel module's name, the affected input, or the operation that writes past its buffer boundary. Exploitation requires high local privileges and high complexity; the reported consequences exclude data modification.
Summary
What happened
Out-of-bounds write in a Huawei kernel module in EMUI and HarmonyOS allows local users to compromise data confidentiality and crash devices. Huawei has not disclosed the kernel module's name, the affected input, or the operation that writes past its buffer boundary. Exploitation requires high local privileges and high complexity; the reported consequences exclude data modification.
The record
- CVE
- CVE-2026-34855
- Published
- Apr 13, 2026
- Updated
- Apr 13, 2026
- Vendor
- MindSpore
- Product
- HarmonyOS
- Classifications
- CWE-20
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Apr 13, 2026CVE publishedPublication date reported by the CVE source.
- Apr 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=4.0.0
- Affected versionversion=4.2.0
- Affected versionversion=4.3.0
- Affected versionversion=4.3.1
- Affected versionversion=5.1.0
- Affected versionversion=6.0.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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