CVE-2024-36136
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 · uneditedAn off-by-one error in WLInfoRailService in Ivanti Avalanche 6.3.1 allows a remote unauthenticated attacker to crash the service, resulting in a DoS.
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 off-by-one error exists in WLInfoRailService in Ivanti Avalanche 6.3.1. This memory handling vulnerability allows a remote unauthenticated attacker to trigger a condition that crashes the service, 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= 6.3.1= 6.3.1.1507= 6.3.2= 6.3.2.3490= 6.3.3= 6.3.3.101= 6.3.4= 6.3.4.153= 6.4.0= 6.4.1= 6.4.1.207= 6.4.1.236CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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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Determine Ivanti Avalanche installed versionCheck the application version through the Avalanche console (Help > About) or check the Windows installed programs list (appwiz.cpl) for 'Ivanti Avalanche' entryAffected if The installed version matches any of: 6.3.1, 6.3.1.1507, 6.3.2, 6.3.2.3490, 6.3.3, 6.3.3.101, 6.3.4, 6.3.4.153, 6.4.0, 6.4.1, 6.4.1.207, or 6.4.1.236
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Verify WLInfoRailService is runningOpen Windows Services (services.msc) and locate 'WLInfoRailService' or check via command: sc query WLInfoRailServiceAffected if The service exists and is in a Running state on the system
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Assess network exposure of WLInfoRailServiceReview firewall rules and network configuration to determine if the port used by WLInfoRailService (typically port 8080 or as configured) is accessible from untrusted networks or the internetAffected if The service port is exposed to unauthenticated remote network access without proper network segmentation or access controls
If the installed version matches any of the affected versions AND WLInfoRailService is running and exposed to unauthenticated network access, the environment is vulnerable to CVE-2024-36136.
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.
From vendor dataApply the vendor patch for CVE-2024-36136 when released. If the patch is unavailable, consider network segmentation to restrict unauthorized access to the WLInfoRailService and monitor for anomalous service restarts.
- Consultation2.0 h
- Implementation3.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-36136 — 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-2024-36136 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
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