CVE-2026-58558

Local service-data disclosure via undisclosed permission flaw

Published Jul 15, 2026 · Updated Jul 15, 2026

File-system permission control in affected Huawei HarmonyOS and EMUI releases allows local users to expose confidential service data. Huawei identifies HarmonyOS 4.0.0, 4.2.0, 4.3.0, and 4.3.1 and EMUI 14.0.0, 14.2.0, and 15.0.0 as affected but has not disclosed the file-system locus, failed permission check, or exposed data. Exploitation requires local access and user interaction; the published record does not describe a concrete integrity or availability consequence.

CVSS severity7.8
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

File-system permission control in affected Huawei HarmonyOS and EMUI releases allows local users to expose confidential service data. Huawei identifies HarmonyOS 4.0.0, 4.2.0, 4.3.0, and 4.3.1 and EMUI 14.0.0, 14.2.0, and 15.0.0 as affected but has not disclosed the file-system locus, failed permission check, or exposed data. Exploitation requires local access and user interaction; the published record does not describe a concrete integrity or availability consequence.

The record

CVE
CVE-2026-58558
Published
Jul 15, 2026
Updated
Jul 15, 2026
Vendor
MindSpore
Product
HarmonyOS
Classifications
CWE-840
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 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.

  1. Affected versionversion=4.0.0
  2. Affected versionversion=4.2.0
  3. Affected versionversion=4.3.0
  4. Affected versionversion=4.3.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

MindSpore · HarmonyOSversion=4.0.0; version=4.2.0; version=4.3.0; version=4.3.1
MindSpore · EMUIversion=14.0.0; version=14.2.0; version=15.0.0

Published CVSS scores

7.8Huawei TechnologiesCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-840Business Logic Errors

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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