CVE-2024-4220
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 · uneditedPrior to 23.1, an information disclosure vulnerability exists within BeyondInsight which can allow an attacker to enumerate usernames.
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 confidenceAn information disclosure vulnerability in BeyondInsight versions prior to 23.1 allows unauthenticated attackers to enumerate valid usernames, likely through differential responses during authentication attempts (e.g., different error messages or timing for existing versus non-existing accounts).
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< 23.1CVSS 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
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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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Locate BeyondInsight installationCheck for BeyondInsight installation directory on the server (common paths: C:\Program Files\BeyondTrust\BeyondInsight on Windows or /opt/beyondtrust/beyondinsight on Linux). Also verify the BeyondInsight Windows service is running if on Windows.Affected if BeyondInsight software is installed on the system
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Determine installed BeyondInsight versionCheck the application version. On Windows, right-click the executable in the installation folder and select Properties > Details to view the File Version. Alternatively, access Help > About within the BeyondInsight web interface.Affected if The installed version number is lower than 23.1
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Test for username enumeration in authenticationSubmit two login attempts to the BeyondInsight web interface: one with a known valid username (such as an admin account) and another with a random non-existent username. Compare the HTTP response codes, error message text, or response timing between the two requests.Affected if The authentication responses differ between valid and invalid usernames (different error messages, different HTTP status codes, or measurably different response times)
If BeyondInsight version is below 23.1, the system allows differential responses during authentication that enable username enumeration by unauthenticated attackers.
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 · scoped23.1
Upgrade BeyondInsight to version 23.1 or later. As an interim control, implement rate limiting and consistent error messaging for authentication failures to prevent username enumeration.
BeyondInsight version 23.1
- 1. Identify the current BeyondInsight version by accessing the product's admin interface or checking system information.
- 2. Schedule a maintenance window for the upgrade process.
- 3. Create a complete backup of the BeyondInsight database and configuration files.
- 4. Review BeyondTrust's official upgrade documentation for version 23.1.
- 5. Upgrade BeyondInsight to version 23.1 or later following the vendor's documented upgrade procedure.
- 6. After upgrade, verify the installation was successful and the web interface is accessible.
- 7. Test that username enumeration is no longer possible (e.g., attempt login with non-existent usernames and verify no difference in response from valid usernames).
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-4220 — 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-2024-4220 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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- Version or environment caveats, and links to real fixes
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