CVE-2024-23534Network attack vector

SYSTEM command execution via unrestricted file upload

Published Apr 19, 2024 · Updated Dec 16, 2025

Unrestricted file upload in Ivanti Avalanche before 6.4.3 allows remote authenticated users to execute arbitrary commands as SYSTEM. The getMasterAdhocCollectionsPath method fails to validate user-supplied data and consequently accepts arbitrary file uploads that can be executed. Valid Avalanche credentials are required, and successful exploitation runs code with full SYSTEM privileges on the server.

CVSS severity8.8
High
EPSS probability2.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Ivanti Avalanche before 6.4.3 allows remote authenticated users to execute arbitrary commands as SYSTEM. The getMasterAdhocCollectionsPath method fails to validate user-supplied data and consequently accepts arbitrary file uploads that can be executed. Valid Avalanche credentials are required, and successful exploitation runs code with full SYSTEM privileges on the server.

The record

CVE
CVE-2024-23534
Published
Apr 19, 2024
Updated
Dec 16, 2025
Vendor
Ivanti
Product
Avalanche
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record 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=0 <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=0 <6.4.3; version=6.4.3 <6.4.3

Published CVSS scores

8.8HackerOneCVSS:3.0/AV:N/AC:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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