CVE-2024-23532Network attack vector

Authenticated code execution via out-of-bounds read

Published Apr 19, 2024 · Updated Aug 1, 2024

Out-of-bounds read in WLAvalancheService in Ivanti Avalanche before 6.4.3 allows remote authenticated users to execute code. WLAvalancheService accepts user-supplied data over TCP port 1777 without validating array bounds, causing reads past an allocated array. Exploitation requires authentication and high-complexity conditions; it can crash the service or execute code as SYSTEM.

CVSS severity7.5
High
EPSS probability1.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in WLAvalancheService in Ivanti Avalanche before 6.4.3 allows remote authenticated users to execute code. WLAvalancheService accepts user-supplied data over TCP port 1777 without validating array bounds, causing reads past an allocated array. Exploitation requires authentication and high-complexity conditions; it can crash the service or execute code as SYSTEM.

The record

CVE
CVE-2024-23532
Published
Apr 19, 2024
Updated
Aug 1, 2024
Vendor
Ivanti
Product
Avalanche
Classifications
CWE-125, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=6.4.3
  2. Affected versionversion=6.4.3 <6.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ivanti · Avalancheversion=6.4.3; version=6.4.3 <6.4.3

Published CVSS scores

7.5HackerOneCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1190Exploit Public-Facing Application

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

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Your stack

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