CVE-2023-39404
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedVulnerability of input parameter verification in certain APIs in the window management module. Successful exploitation of this vulnerability may cause the device to restart.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA vulnerability exists in input parameter verification within certain APIs of the window management module. Attackers exploiting this flaw can trigger improper input handling that leads to device restart, resulting in denial of service. The issue stems from insufficient validation of parameters passed to window management APIs.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 13.0.0= 3.0.0= 3.1.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the Huawei device OS versionOn the Huawei device, go to Settings > About Phone > Version, or use 'getprop ro.build.version.emui' via ADB shell for EMUI, or 'getprop ro.build.version鸿蒙' for HarmonyOSAffected if The displayed version matches exactly 13.0.0 for EMUI, or 3.0.0 or 3.1.0 for HarmonyOS
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Confirm the window management module is presentCheck for the presence of the window management service by examining system services list via 'dumpsys' command in ADB shell: 'dumpsys window' or 'dumpsys window -h'Affected if The window management service responds and displays window manager information, indicating the module is active
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Check if third-party window management APIs are accessibleReview installed applications for those that utilize window management APIs, particularly overlay windows or system alert windows, by examining app permissions in Settings > Apps > PermissionsAffected if Applications with 'Display over other apps' (SYSTEM_ALERT_WINDOW) permission are installed, as these can invoke the vulnerable window management APIs
A device is affected if it runs Huawei EMUI 13.0.0 or HarmonyOS 3.0.0/3.1.0 and the window management module is accessible, allowing malicious apps with appropriate permissions to trigger the input validation flaw leading to device restart.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply vendor-provided patches for the window management module that address input parameter validation. If no patch is available, restrict access to vulnerable APIs through application sandboxing or permission controls.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $12,352.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-39404 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-39404 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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