CVE-2020-24161
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 · uneditedGuangzhou NetEase Mail Master 4.14.1.1004 on Windows has a DLL hijacking vulnerability. Attackers can use this vulnerability to execute malicious code.
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 confidenceDLL hijacking vulnerability in Guangzhou NetEase Mail Master 4.14.1.1004 on Windows allows attackers to place malicious DLL files in locations where the application loads DLLs from, enabling arbitrary code execution with the privileges of the vulnerable application.
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= 4.14.1.1004CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 installed version of NetEase Mail MasterOpen Control Panel > Programs and Features, or right-click the application shortcut and select Properties to view the version. Alternatively, locate the executable (typically in Program Files) and check its file properties.Affected if The version displayed is 4.14.1.1004 exactly.
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Locate the application executable pathRight-click the NetEase Mail Master shortcut or executable, select Properties, and check the 'Location' or 'Open file location' to find the installation directory.Affected if The application is installed in a directory writable by other users (such as a shared network drive or a user-writable folder).
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Check directory permissions on the installation folderRight-click the installation folder > Properties > Security tab. Examine the permissions for Users or other non-admin groups. Verify if Write or Modify permissions are granted to non-admin users.Affected if Non-privileged users have Write or Modify permissions to the folder where the executable resides.
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Verify DLL loading behaviorRun the application from a directory that contains a test DLL with a name matching what the application attempts to load. Monitor using Process Monitor (ProcMon) from Sysinternals to see DLL search paths.Affected if The application loads DLLs from its own directory or current working directory before system directories, allowing DLL hijacking.
A user is affected if NetEase Mail Master version 4.14.1.1004 is installed and the application directory or working directory is writable by other users, enabling DLL hijacking.
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 dataContact NetEase for an official patch; until then, implement application control policies to restrict the application from loading DLLs from untrusted directories, and ensure users do not run the application from directories writable by other users.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-24161 — 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-2020-24161 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
- No spam, self-promotion, credentials, or personal data