CVE-2025-54642

Service interruption via gyroscope buffer overflow

Published Aug 6, 2025 · Updated Aug 6, 2025

Buffer overflow in Huawei HarmonyOS and EMUI allows local users to interrupt device service through malformed data in the kernel gyroscope module. The module insufficiently validates gyroscope data before processing it, causing the kernel buffer to overflow. Reaching the flaw requires local, highly privileged access on HarmonyOS 3.0.0, 3.1.0, and 4.0.0 or EMUI 13.0.0 and 14.0.0; Huawei reports only availability impact and does not identify whether failure is a crash, hang, or reboot.

CVSS severity6.7
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Buffer overflow in Huawei HarmonyOS and EMUI allows local users to interrupt device service through malformed data in the kernel gyroscope module. The module insufficiently validates gyroscope data before processing it, causing the kernel buffer to overflow. Reaching the flaw requires local, highly privileged access on HarmonyOS 3.0.0, 3.1.0, and 4.0.0 or EMUI 13.0.0 and 14.0.0; Huawei reports only availability impact and does not identify whether failure is a crash, hang, or reboot.

The record

CVE
CVE-2025-54642
Published
Aug 6, 2025
Updated
Aug 6, 2025
Vendor
MindSpore
Product
HarmonyOS
Classifications
CWE-120, CWE-20, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.0
  2. Affected versionversion=3.1.0
  3. Affected versionversion=4.0.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

MindSpore · HarmonyOSversion=3.0.0; version=3.1.0; version=4.0.0
MindSpore · EMUIversion=13.0.0; version=14.0.0

Published CVSS scores

5.5NISTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.7Huawei TechnologiesCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo