CVE-2023-39399

Unauthorized sandbox file access via inadequate parameter verification

Published Aug 13, 2023 · Updated Oct 9, 2024

Parameter verification failure in Huawei HarmonyOS and EMUI allows attackers to read and write sandbox files via unspecified vectors. The installd module inadequately validates operation parameters before granting sandbox-file access, enabling unauthorized file reads and writes; Huawei has not disclosed the affected API or exact validation error. The required privileges and entry point are undisclosed, and the documented consequence is limited to unauthorized access to sandbox files.

CVSS severity9.1
Critical
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Parameter verification failure in Huawei HarmonyOS and EMUI allows attackers to read and write sandbox files via unspecified vectors. The installd module inadequately validates operation parameters before granting sandbox-file access, enabling unauthorized file reads and writes; Huawei has not disclosed the affected API or exact validation error. The required privileges and entry point are undisclosed, and the documented consequence is limited to unauthorized access to sandbox files.

The record

CVE
CVE-2023-39399
Published
Aug 13, 2023
Updated
Oct 9, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
HarmonyOS
Classifications
CWE-285
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 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=2.0.0
  2. Affected versionversion=2.0.1
  3. Affected versionversion=2.1.0
  4. Affected versionversion=3.0.0
  5. Affected versionversion=3.1.0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Huawei Technologies Co., Ltd. · HarmonyOSversion=2.0.0; version=2.0.1; version=2.1.0; version=3.0.0; version=3.1.0
MindSpore · EMUIversion=11.0.1; version=12.0.0; version=12.0.1; version=13.0.0

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization

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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