CVE-2026-28733

Local code execution via storage-service use-after-free

Published May 19, 2026 · Updated May 19, 2026

Use-after-free in filemanagement_storage_service in OpenHarmony 5.0.3 through 6.0 allows local users to execute arbitrary code. OpenHarmony has not disclosed the affected function, freed object, trigger input, or execution path within the storage service. Exploitation requires low-privileged local access and no user interaction; the published CVSS vector records availability impact only, despite the code-execution description.

CVSS severity6.5
Medium
EPSS probability0.13%
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 filemanagement_storage_service in OpenHarmony 5.0.3 through 6.0 allows local users to execute arbitrary code. OpenHarmony has not disclosed the affected function, freed object, trigger input, or execution path within the storage service. Exploitation requires low-privileged local access and no user interaction; the published CVSS vector records availability impact only, despite the code-execution description.

The record

CVE
CVE-2026-28733
Published
May 19, 2026
Updated
May 19, 2026
Vendor
OpenHarmony
Product
OpenHarmony
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 19, 2026CVE publishedPublication date reported by the CVE source.
  2. May 19, 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=v5.0.3 <=v6.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

OpenHarmony · OpenHarmonyversion=v5.0.3 <=v6.0

Published CVSS scores

6.5OpenHarmonyCVSS:3.1/AV:L/AC:L/PR:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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