CVE-2023-39393
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 insecure signatures in the ServiceWifiResources module. Successful exploitation of this vulnerability may cause ServiceWifiResources to be maliciously modified and overwritten.
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 signature validation vulnerability exists in the ServiceWifiResources module where insecure signature verification allows attackers to modify or overwrite the ServiceWifiResources component. This enables injection of malicious code into what should be a trusted system service.
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= 12.0.1= 13.0.0= 2.0.1= 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
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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 installed Huawei operating systemGo to Settings > About Phone > Version on the device, or run 'getprop ro.build.version.emui' or 'getprop ro.build.version.harmonyos' via ADB shellAffected if The OS is identified as either Huawei Emui or Harmonyos
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Determine the exact OS version numberNote the version number displayed (e.g., 12.0.1, 13.0.0, 2.0.1, 3.0.0, 3.1.0) from the version information screen or getprop outputAffected if The version matches exactly 12.0.1 or 13.0.0 for Emui, or 2.0.1, 3.0.0, or 3.1.0 for Harmonyos
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Confirm the ServiceWifiResources module is presentCheck for the existence of the ServiceWifiResources APK or system service file on the device, typically found in /system/app/ or /system/framework/ directories via ADB shell with 'find /system -name *ServiceWifiResources*'Affected if The ServiceWifiResources component exists on the device
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Verify WiFi service functionality is enabledNavigate to Settings > Network & Internet > Wi-Fi and confirm WiFi is turned on, or check via 'adb shell settings get global wifi_on'Affected if WiFi is enabled and the device runs a vulnerable OS version
A user is affected if the device runs Huawei Emui 12.0.1 or 13.0.0, or Harmonyos 2.0.1, 3.0.0, or 3.1.0, and the ServiceWifiResources module is present on the device.
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 dataImplement robust cryptographic signature verification using strong algorithms (e.g., RSA-2048+, ECDSA) with proper chain-of-trust validation. Ensure all ServiceWifiResources updates are signed by trusted keys and reject any unsigned or improperly signed binaries.
- Consultation4.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,040.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-39393 — 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-2023-39393 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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