CVE-2024-37399Network attack vector

Service crash via NULL pointer dereference

Published Aug 14, 2024 · Updated Aug 14, 2024

NULL pointer dereference in WLAvalancheService in Ivanti Avalanche 6.3.1 through 6.4.3 allows remote attackers to crash the service. The WLAvalancheService network listener on TCP port 1777 reaches a NULL pointer dereference, but the triggering request fields are undisclosed. Unauthenticated network access to the listener is sufficient; the documented consequence is a service crash, with no reported data exposure or modification.

CVSS severity7.5
High
EPSS probability27.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

NULL pointer dereference in WLAvalancheService in Ivanti Avalanche 6.3.1 through 6.4.3 allows remote attackers to crash the service. The WLAvalancheService network listener on TCP port 1777 reaches a NULL pointer dereference, but the triggering request fields are undisclosed. Unauthenticated network access to the listener is sufficient; the documented consequence is a service crash, with no reported data exposure or modification.

The record

CVE
CVE-2024-37399
Published
Aug 14, 2024
Updated
Aug 14, 2024
Vendor
Ivanti
Product
Avalanche
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.3.1 <6.4.4
  2. Affected versionversion=6.4.4 <6.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ivanti · Avalancheversion=6.3.1 <6.4.4; version=6.4.4 <6.4.4

Published CVSS scores

7.5HackerOne CNACVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo