CVE-2025-54631

Service interruption via insufficient partition data validation

Published Aug 6, 2025 · Updated Aug 6, 2025

Insufficient data-length validation in Huawei HarmonyOS and EMUI releases allows local users to interrupt service through the partition module. The module accepts data without adequate length verification; Huawei has not disclosed the input path or resulting memory operation. Exploitation requires local high-privileged access and affects availability, but the vendor does not identify whether the failure causes a hang, crash, reboot, or shutdown.

CVSS severity6.7
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient data-length validation in Huawei HarmonyOS and EMUI releases allows local users to interrupt service through the partition module. The module accepts data without adequate length verification; Huawei has not disclosed the input path or resulting memory operation. Exploitation requires local high-privileged access and affects availability, but the vendor does not identify whether the failure causes a hang, crash, reboot, or shutdown.

The record

CVE
CVE-2025-54631
Published
Aug 6, 2025
Updated
Aug 6, 2025
Vendor
MindSpore
Product
HarmonyOS
Classifications
CWE-190, T1499.004
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

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Is a vulnerable build present?

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

  1. Affected versionversion=4.0.0
  2. Affected versionversion=4.2.0
  3. Affected versionversion=4.3.0
  4. Affected versionversion=4.3.1
  5. Affected versionversion=5.0.1
  6. Affected versionversion=5.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

MindSpore · HarmonyOSversion=4.0.0; version=4.2.0; version=4.3.0; version=4.3.1; version=5.0.1; version=5.1.0
MindSpore · EMUIversion=14.0.0; version=15.0.0

Published CVSS scores

6.7Huawei TechnologiesCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-190Integer Overflow or Wraparound
T1499.004Application or System Exploitation

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

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Your stack

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