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AvalancheApplication · Ivanti

CVE-2024-27978

MEDIUM · 6.5 CVSS v3.1 Published 2024-04-19
Fix available
A fix is available. Upgrade to 6.4.3.528 or later.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable Zero-click

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 · unedited
A 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 · moderate confidence

This is a Null Pointer Dereference vulnerability in the WLAvalancheService component of Ivanti Avalanche, a mobile device management platform. An authenticated remote attacker can exploit this flaw to cause the service to crash, resulting in denial of service. The CVSS 6.5 indicates network accessibility with authentication required and primary impact to availability.

MitigationUpgrade Ivanti Avalanche to version 6.4.3 or later to obtain the vendor patch. If immediate patching is not feasible, restrict network access to the WLAvalancheService to trusted administrative IPs and ensure robust authentication mechanisms are in place.

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
AvalancheApplication
Affected:< 6.4.3.528

CVSS 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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm Ivanti Avalanche installation
    Check for the Ivanti Avalanche installation directory (commonly at C:\Program Files\WLAvalanche or C:\Ivanti\Avalanche), or look for the WLAvalancheService in Windows Services (services.msc).
    Affected if Ivanti Avalanche is installed and the WLAvalancheService exists on the system.
  2. Identify installed version
    Open the Windows Services panel (services.msc), locate the WLAvalancheService, right-click and select Properties, or check the version information in the Avalanche installation directory (typically in bin\Avalanche.exe or a version.txt file).
    Affected if The version shown is lower than 6.4.3.528.
  3. Verify WLAvalancheService status
    In Windows Services (services.msc), confirm the WLAvalancheService status. Check if it is running and note the startup type (Automatic, Manual, or Disabled).
    Affected if The WLAvalancheService is installed and running, making the vulnerability exploitable.
  4. Assess network exposure
    Review firewall rules or network configuration to determine if the WLAvalancheService ports (default 8080, 8443 for web console) are exposed to untrusted networks. Check if the service listens on external interfaces versus localhost only.
    Affected if The Avalanche web console or WLAvalancheService ports are accessible from untrusted networks.

If Ivanti Avalanche is installed with a version lower than 6.4.3.528 and the WLAvalancheService is running and network-accessible, the environment is affected by this CVE.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 6.4.3.528 or later
Fixed in 6.4.3.528
Interim mitigation

Upgrade Ivanti Avalanche to version 6.4.3 or later to obtain the vendor patch. If immediate patching is not feasible, restrict network access to the WLAvalancheService to trusted administrative IPs and ensure robust authentication mechanisms are in place.

Recommended fix High confidence

Ivanti Avalanche 6.4.3.528 or later

  1. 1. Back up the current Ivanti Avalanche installation and configuration
  2. 2. Download Ivanti Avalanche version 6.4.3.528 or later from the official Ivanti download portal
  3. 3. Stop the WLAvalancheService and related Avalanche services
  4. 4. Install the upgraded Avalanche 6.4.3.528 package following standard upgrade procedures
  5. 5. Verify the upgrade by checking the installed version in Avalanche administration console
  6. 6. Start the WLAvalancheService and confirm all services are running normally
Caveat Review Ivanti release notes for any configuration or compatibility changes between your current version and 6.4.3

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Avalanche Scoped from the published advisory
  • Consultation4.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,480
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-27978 in production — separate from our analysis above.

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What this is

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.

What belongs here
  • 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