CVE-2023-4753

Kernel crash via improper system call input handling

Published Sep 21, 2023 · Updated Aug 2, 2024

Improper input validation in the OpenHarmony kernel through version 3.2.1 allows local users to crash the kernel via an erroneous system-call argument. A system-call function mishandles parameters received from user space, so crafted error input reaches kernel code in an invalid form and triggers the crash. The attacker must have local execution on an affected OpenHarmony device; the documented consequence is a kernel service interruption, with no stated confidentiality or data-integrity impact.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in the OpenHarmony kernel through version 3.2.1 allows local users to crash the kernel via an erroneous system-call argument. A system-call function mishandles parameters received from user space, so crafted error input reaches kernel code in an invalid form and triggers the crash. The attacker must have local execution on an affected OpenHarmony device; the documented consequence is a kernel service interruption, with no stated confidentiality or data-integrity impact.

The record

CVE
CVE-2023-4753
Published
Sep 21, 2023
Updated
Aug 2, 2024
Vendor
OpenHarmony
Product
OpenHarmony
Classifications
CWE-20, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=v3.2.0 <=v3.2.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

OpenHarmony · OpenHarmonyversion=v3.2.0 <=v3.2.1

Published CVSS scores

3.9OpenHarmonyCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
5.5NVDCVSS: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.

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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-20Improper Input Validation
T1499Endpoint Denial of Service

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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