CVE-2026-33391Network attack vector

Authenticated asset-visibility disruption via unchecked polling privileges

Published Sep 8, 2026 · Updated Sep 8, 2026

Incorrect authorization in Smart Polling in Nozomi Networks Guardian and CMC before 26.3.0 allows remote authenticated users to change settings. The web management interface fails to validate that a limited-privilege account is authorized to modify Smart Polling discovery configuration. This access lets such an account impair monitored-network asset visibility by changing how assets are discovered.

CVSS severity5.3
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Smart Polling in Nozomi Networks Guardian and CMC before 26.3.0 allows remote authenticated users to change settings. The web management interface fails to validate that a limited-privilege account is authorized to modify Smart Polling discovery configuration. This access lets such an account impair monitored-network asset visibility by changing how assets are discovered.

The record

CVE
CVE-2026-33391
Published
Sep 8, 2026
Updated
Sep 8, 2026
Vendor
Nozomi Networks
Product
Guardian
Classifications
CWE-863, CAPEC-122, T1685
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record 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 <26.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nozomi Networks · Guardianversion=0 <26.3.0
Nozomi Networks · Central Management Console (CMC)version=0 <26.3.0

Published CVSS scores

5.4Nozomi NetworksCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
5.3Nozomi NetworksCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
CAPEC-122Privilege Abuse
T1685Disable or Modify Tools

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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