CVE-2023-46263Network attack vector

Administrative SYSTEM code execution via arbitrary upload

Published Dec 19, 2023 · Updated Aug 2, 2024

Arbitrary file upload in Ivanti Avalanche 6.4.1 and earlier allows remote authenticated users to execute code through FileStoreConfig. The FileStoreConfig app fails to validate user-supplied upload data, permitting dangerous files to be written and executed by the server. High-privilege authenticated access is required, and successful exploitation runs attacker-supplied code as SYSTEM with full host control.

CVSS severity7.2
High
EPSS probability81.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in Ivanti Avalanche 6.4.1 and earlier allows remote authenticated users to execute code through FileStoreConfig. The FileStoreConfig app fails to validate user-supplied upload data, permitting dangerous files to be written and executed by the server. High-privilege authenticated access is required, and successful exploitation runs attacker-supplied code as SYSTEM with full host control.

The record

CVE
CVE-2023-46263
Published
Dec 19, 2023
Updated
Aug 2, 2024
Vendor
Ivanti
Product
Avalanche
Classifications
CWE-434, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=6.4.1 <=6.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Ivanti · Avalancheversion=6.4.1 <=6.4.1

Published CVSS scores

7.2HackerOneCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesadmin
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.

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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