CVE-2024-0218Network attack vector

IDS monitoring interruption via malformed RADIUS fields

Published Apr 10, 2024 · Updated Sep 20, 2024

Denial of service in Nozomi Networks Guardian before 23.4.1 allows remote attackers to interrupt IDS analysis with malformed RADIUS packets. The RADIUS parser fails to validate the syntax of certain packet fields before the IDS processes them, causing asset, node, and link updates to stop. No authentication is required, and affected sensors can leave network traffic unanalyzed until the IDS module is restarted.

CVSS severity8.2
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Nozomi Networks Guardian before 23.4.1 allows remote attackers to interrupt IDS analysis with malformed RADIUS packets. The RADIUS parser fails to validate the syntax of certain packet fields before the IDS processes them, causing asset, node, and link updates to stop. No authentication is required, and affected sensors can leave network traffic unanalyzed until the IDS module is restarted.

The record

CVE
CVE-2024-0218
Published
Apr 10, 2024
Updated
Sep 20, 2024
Vendor
Nozomi Networks
Product
Guardian
Classifications
CWE-1286, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 20, 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=0 <23.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nozomi Networks · Guardianversion=0 <23.4.1

Published CVSS scores

7.5Nozomi NetworksCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.2Nozomi NetworksCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

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-1286Improper Validation of Syntactic Correctness of Input
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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