dbcve.org
AvalancheApplication · Ivanti

CVE-2024-23526

HIGH · 7.5 CVSS v3.1 Published 2024-04-19
Fix available
A fix is available. Upgrade to 6.4.3.528 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges 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
An out-of-bounds read vulnerability in WLAvalancheService component of Ivanti Avalanche before 6.4.3, in certain conditions can allow an unauthenticated remote attacker to read sensitive information in memory.

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

An out-of-bounds read vulnerability exists in the WLAvalancheService component of Ivanti Avalanche versions before 6.4.3. Under specific conditions, an unauthenticated remote attacker can exploit this to read sensitive information from memory, potentially exposing credentials or session data.

MitigationUpgrade Ivanti Avalanche to version 6.4.3 or later to remediate this vulnerability. If immediate patching is not feasible, consider network segmentation to limit exposure of the WLAvalancheService to untrusted networks.

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 checks

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

  1. Identify Ivanti Avalanche installation and version
    Locate the Ivanti Avalanche installation directory and check the version information, typically found in the application metadata, installer logs, or product information file within the program folder
    Affected if The installed version is lower than 6.4.3.528
  2. Confirm WLAvalancheService component is present
    Verify that the WLAvalancheService executable or component exists on the system, typically located in the Ivanti Avalanche installation directory under the bin or services folder
    Affected if WLAvalancheService is present on the system
  3. Determine if WLAvalancheService is running
    Check running processes or services list for WLAvalancheService, or query the Windows Service Control Manager if on Windows
    Affected if WLAvalancheService is currently running as a service or process
  4. Assess network exposure of WLAvalancheService
    Review firewall rules, network configuration, or port bindings to determine if the WLAvalancheService port is accessible from untrusted networks. The service typically listens on configured ports for Avalanche administration.
    Affected if WLAvalancheService is exposed to untrusted or external networks without proper network segmentation

You are affected if Ivanti Avalanche version is below 6.4.3.528 AND the WLAvalancheService component is running and accessible on your network.

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 remediate this vulnerability. If immediate patching is not feasible, consider network segmentation to limit exposure of the WLAvalancheService to untrusted networks.

Recommended fix High confidence

Ivanti Avalanche 6.4.3.528 or later

  1. Download Ivanti Avalanche version 6.4.3.528 or later from the official Ivanti download portal
  2. Ensure you have a complete backup of your current Avalanche installation and database
  3. Stop the WLAvalancheService and related Avalanche services
  4. Install the updated Avalanche 6.4.3.528 or later version following the standard upgrade procedure
  5. Start the Avalanche services and verify the installation is successful
  6. Validate that the WLAvalancheService component is running correctly

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

Fix this in Avalanche Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing8.0 h
  • Review / QA4.0 h
24.0 hours of engineering $4,160
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,656.

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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-2024-23526 in production — separate from our analysis above.

No notes yet

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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