CVE-2024-50321Network attack vector

Service interruption via improperly terminating loop

Published Nov 12, 2024 · Updated Nov 12, 2024

Infinite-loop denial of service in WLAvalancheService in Ivanti Avalanche before 6.4.6 allows remote attackers to interrupt the service. The service accepts traffic on TCP port 1777 by default, and its loop lacks a proper exit condition when processing untrusted input. No authentication or user interaction is required, and successful exploitation leaves the affected service unavailable.

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

What happened

Infinite-loop denial of service in WLAvalancheService in Ivanti Avalanche before 6.4.6 allows remote attackers to interrupt the service. The service accepts traffic on TCP port 1777 by default, and its loop lacks a proper exit condition when processing untrusted input. No authentication or user interaction is required, and successful exploitation leaves the affected service unavailable.

The record

CVE
CVE-2024-50321
Published
Nov 12, 2024
Updated
Nov 12, 2024
Vendor
Ivanti
Product
Avalanche
Classifications
CWE-835, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 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=6.4.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ivanti · Avalancheversion=6.4.6

Published CVSS scores

7.5IvantiCVSS: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.

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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-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499Endpoint Denial of Service

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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