CVE-2023-46260Network attack vector

Unauthenticated service crash via null-pointer dereference

Published Dec 19, 2023 · Updated Nov 27, 2024

Null-pointer dereference in Ivanti Avalanche 6.4.1 and earlier allows remote attackers to crash WLAvalancheService via crafted packets. WLAvalancheService processes a crafted Mobile Device Server packet by dereferencing a null pointer instead of rejecting the invalid input. No authentication or user interaction is required, and the demonstrated consequence is loss of service availability rather than code execution.

CVSS severity7.5
High
EPSS probability9.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null-pointer dereference in Ivanti Avalanche 6.4.1 and earlier allows remote attackers to crash WLAvalancheService via crafted packets. WLAvalancheService processes a crafted Mobile Device Server packet by dereferencing a null pointer instead of rejecting the invalid input. No authentication or user interaction is required, and the demonstrated consequence is loss of service availability rather than code execution.

The record

CVE
CVE-2023-46260
Published
Dec 19, 2023
Updated
Nov 27, 2024
Vendor
Ivanti
Product
Avalanche
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 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 privilegesunauthenticated

What is affected?

Ivanti · Avalancheversion=6.4.1 <=6.4.1

Published CVSS scores

7.5HackerOneCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
9.8NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

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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