CVE-2019-6266
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 · uneditedCordaware bestinformed Microsoft Windows client before 6.2.1.0 is affected by insecure SSL certificate verification and insecure access patterns. These issues allow remote attackers to downgrade encrypted connections to cleartext.
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 confidenceThe Cordaware bestinformed Windows client before version 6.2.1.0 contains flaws in SSL certificate verification and insecure access patterns that allow remote attackers to perform man-in-the-middle attacks, downgrading encrypted TLS connections to unencrypted cleartext communications.
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< 6.2.1.0CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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 installed version of Cordaware BestinformedOpen Windows Registry Editor and navigate to HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall or HKLM\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall. Look for an entry named 'Cordaware bestinformed' and check the DisplayVersion value.Affected if The displayed version is less than 6.2.1.0
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Locate the Cordaware Bestinformed installation directoryCheck the default installation path typically at C:\Program Files\Cordaware\bestinformed or C:\Program Files (x86)\Cordaware\bestinformed. Right-click the executable (commonly bestinformed.exe) and select Properties, then view the Details tab to see the File Version.Affected if The file version shown is earlier than 6.2.1.0
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Verify if the Cordaware Bestinformed service is runningOpen Services (services.msc) and look for a service named 'Cordaware bestinformed' or similar. Check the Status column to see if it is Running.Affected if The service is running on a version lower than 6.2.1.0, making it vulnerable to MITM attacks when communicating over the network
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Check network listeners for the client applicationOpen Command Prompt and run 'netstat -an | findstr LISTENING' to see active listening ports. Also check with 'netsh interface tcp show global' or use Process Explorer to identify which ports bestinformed.exe is bound to.Affected if The application is listening on network ports and is version 6.2.1.0 or lower, exposing the SSL verification vulnerability to network attackers
The environment is affected if Cordaware Bestinformed is installed and running with a version number lower than 6.2.1.0, as the SSL certificate validation flaw exists in all earlier versions regardless of configuration.
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.
dbcve · scoped6.2.1.0
Upgrade the Cordaware bestinformed client to version 6.2.1.0 or later to obtain the patched SSL certificate validation and secure access pattern implementations.
6.2.1.0
- 1. Obtain the latest Cordaware bestinformed client version 6.2.1.0 or later from the official vendor
- 2. Ensure all current client data and configurations are backed up
- 3. Deploy the updated client package to all Windows systems running versions prior to 6.2.1.0
- 4. Verify that SSL certificate validation is now properly enforced after the upgrade
- 5. Test that the client can establish secure SSL/TLS connections correctly
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,224.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-6266 — 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-2019-6266 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