CVE-2026-34858

Service interruption via communication-module use-after-free

Published Apr 13, 2026 · Updated Apr 13, 2026

Use-after-free in the Huawei HarmonyOS 5.1.0 and 6.0.0 communication module allows local users to interrupt an affected service. Huawei has not disclosed the affected function or how the reported race condition leaves a freed object accessible in the communication module. Exploitation requires high privileges and high attack complexity, and the published impact is limited to availability.

CVSS severity4.1
Medium
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

Use-after-free in the Huawei HarmonyOS 5.1.0 and 6.0.0 communication module allows local users to interrupt an affected service. Huawei has not disclosed the affected function or how the reported race condition leaves a freed object accessible in the communication module. Exploitation requires high privileges and high attack complexity, and the published impact is limited to availability.

The record

CVE
CVE-2026-34858
Published
Apr 13, 2026
Updated
Apr 13, 2026
Vendor
MindSpore
Product
HarmonyOS
Classifications
CWE-362, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. 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.

  1. Affected versionversion=5.1.0
  2. Affected versionversion=6.0.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

MindSpore · HarmonyOSversion=5.1.0; version=6.0.0

Published CVSS scores

4.1Huawei TechnologiesCVSS:3.1/AV:L/AC:H/PR:H/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.

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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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Application or System Exploitation

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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