CVE-2024-24991
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 · uneditedA Null Pointer Dereference vulnerability in WLAvalancheService component of Ivanti Avalanche before 6.4.3 allows an authenticated remote attacker to perform denial of service attacks.
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 confidenceA Null Pointer Dereference vulnerability exists in the WLAvalancheService component of Ivanti Avalanche versions prior to 6.4.3. An authenticated remote attacker can trigger this vulnerability to cause the service to crash, resulting in denial of 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< 6.4.3.528CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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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Confirm Ivanti Avalanche is installedLocate Ivanti Avalanche installation directory or check for Avalanche-related services on the systemAffected if Ivanti Avalanche software is present on the system
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Identify installed Ivanti Avalanche versionAccess the software's About page, check version information in the installation directory, or use system inventory tools to retrieve the version numberAffected if The installed version is lower than 6.4.3.528 (e.g., 6.4.2.x, 6.3.x, earlier versions)
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Verify WLAvalancheService component is presentCheck for the WLAvalancheService component in the Ivanti Avalanche installation or list running services related to AvalancheAffected if WLAvalancheService is present and running on the system
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Confirm remote access exposureDetermine if the Avalanche web interface or remote services are accessible from the networkAffected if The service is exposed to network access without proper authentication controls
The environment is affected if Ivanti Avalanche with a version lower than 6.4.3.528 is installed and the WLAvalancheService component is present and accessible.
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 · scoped6.4.3.528
Upgrade Ivanti Avalanche to version 6.4.3 or later to resolve this vulnerability.
Ivanti Avalanche 6.4.3 or later
- Back up the current Ivanti Avalanche configuration and database
- Stop the WLAvalancheService
- Download Ivanti Avalanche version 6.4.3 or later from the official Ivanti support portal
- Install the upgrade following standard Ivanti upgrade procedures
- Start the WLAvalancheService
- Verify that the Avalanche console is accessible and all services are running normally
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing6.0 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 $3,520.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-24991 — 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-2024-24991 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