CVE-2013-5999
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 · uneditedKingsoft KDrive Personal before 1.21.0.1880 on Windows does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
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 · high confidenceKingsoft KDrive Personal before version 1.21.0.1880 on Windows fails to validate X.509 certificates during SSL/TLS connections, enabling man-in-the-middle attackers to intercept communications by presenting fraudulent certificates and potentially access sensitive data transmitted between the client and server.
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<= 1.21.0.1878CVSS 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
- M
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- None
AV:N/AC:M/Au:N/C:P/I:P/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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Verify Kingsoft KDrive is installedOpen Windows Control Panel > Programs and Features, or check C:\Program Files\Kingsoft\Kdrive for the application directoryAffected if Kingsoft KDrive Personal is present on the system
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Determine installed version numberRight-click on the KDrive executable (e.g., KDrive.exe) in the installation directory, select Properties, then view the Details tab for the Version field. Alternatively, right-click the .exe > Properties > VersionAffected if The version shown is 1.21.0.1878 or lower
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Compare version to affected rangeIf version is visible in Programs and Features, locate Kingsoft KDrive Personal there and note the version columnAffected if The installed version is less than or equal to 1.21.0.1878 (for example, 1.21.0.1878, 1.20.x.x, etc.)
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Confirm application usage contextIdentify whether KDrive is configured to sync or backup data over network connections, as this vulnerability affects all SSL/TLS traffic the application generatesAffected if KDrive is actively used for cloud storage/backup operations connecting to Kingsoft servers
The environment is affected if Kingsoft KDrive Personal version 1.21.0.1878 or lower is installed and used for network communications.
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 dataUpgrade to Kingsoft KDrive Personal version 1.21.0.1880 or later which implements proper X.509 certificate chain validation. Until patched, avoid using the application on untrusted networks.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2013-5999 — 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-2013-5999 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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