CVE-2025-66327

Service data exposure via network-module race condition

Published Dec 8, 2025 · Updated Dec 8, 2025

Race condition in the HarmonyOS network module in versions 5.0.1 and 5.1.0 allows local users to cause unspecified service-confidentiality impact. Huawei has not disclosed the affected function, shared resource, competing operations, trigger, or data-exposure path. Local access is required; the vendor's impact text identifies confidentiality, while its CNA vector reports availability impact only.

CVSS severity7.1
High
EPSS probability0.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the HarmonyOS network module in versions 5.0.1 and 5.1.0 allows local users to cause unspecified service-confidentiality impact. Huawei has not disclosed the affected function, shared resource, competing operations, trigger, or data-exposure path. Local access is required; the vendor's impact text identifies confidentiality, while its CNA vector reports availability impact only.

The record

CVE
CVE-2025-66327
Published
Dec 8, 2025
Updated
Dec 8, 2025
Vendor
MindSpore
Product
HarmonyOS
Classifications
CWE-362, CAPEC-26
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 8, 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=5.0.1
  2. Affected versionversion=5.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

MindSpore · HarmonyOSversion=5.0.1; version=5.1.0

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
7.1Huawei TechnologiesCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CAPEC-26Leveraging Race Conditions

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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