CVE-2024-39816

Local code execution via unchecked container indexes

Published Sep 2, 2024 · Updated Sep 3, 2024

Out-of-bounds write in OpenHarmony 4.0.0 through 4.1.0 allows local users to execute arbitrary code in pre-installed apps. The Arkcompiler Ets Runtime fast paths for ArkPrivate container Get and Set operations accept indexes beyond a container's bounds and access memory outside its backing storage. A low-privileged local account can trigger the flaw without user interaction, compromising a pre-installed app's confidentiality and integrity without a reported service interruption.

CVSS severity7.8
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in OpenHarmony 4.0.0 through 4.1.0 allows local users to execute arbitrary code in pre-installed apps. The Arkcompiler Ets Runtime fast paths for ArkPrivate container Get and Set operations accept indexes beyond a container's bounds and access memory outside its backing storage. A low-privileged local account can trigger the flaw without user interaction, compromising a pre-installed app's confidentiality and integrity without a reported service interruption.

The record

CVE
CVE-2024-39816
Published
Sep 2, 2024
Updated
Sep 3, 2024
Vendor
OpenHarmony
Product
OpenHarmony
Classifications
CWE-787, T1203
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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=4.0.0 <=4.1.0
  2. Affected versionversion=v4.0.0 <=4.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

OpenHarmony · OpenHarmonyversion=4.0.0 <=4.1.0; version=v4.0.0 <=4.1.0

Published CVSS scores

8.4OpenHarmonyCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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