CVE-2023-32649Network attack vector

IDS crash via malformed Asset Intelligence fields

Published Sep 19, 2023 · Updated Feb 27, 2025

Denial of service in Nozomi Networks Guardian and CMC 22.6.0 before 22.6.3 and 23.0.0 before 23.1.0 allows remote attackers to crash the IDS. The Asset Intelligence functionality fails to validate the syntactic correctness of certain network-packet fields before the IDS parses them. No authentication is required; the IDS restarts automatically, but monitored traffic can go unanalyzed during the resulting interruption.

CVSS severity8.2
High
EPSS probability0.53%
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 and CMC 22.6.0 before 22.6.3 and 23.0.0 before 23.1.0 allows remote attackers to crash the IDS. The Asset Intelligence functionality fails to validate the syntactic correctness of certain network-packet fields before the IDS parses them. No authentication is required; the IDS restarts automatically, but monitored traffic can go unanalyzed during the resulting interruption.

The record

CVE
CVE-2023-32649
Published
Sep 19, 2023
Updated
Feb 27, 2025
Vendor
Nozomi Networks
Product
Guardian
Classifications
CWE-1286, CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 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=22.6.0 <22.6.3
  2. Affected versionversion=23.0.0 <23.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nozomi Networks · Guardianversion=22.6.0 <22.6.3; version=23.0.0 <23.1.0
Nozomi Networks · Central Management Console (CMC)version=22.6.0 <22.6.3; version=23.0.0 <23.1.0

Published CVSS scores

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

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-1286Improper Validation of Syntactic Correctness of Input
CWE-20Improper Input Validation
T1499Endpoint Denial of Service

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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