Incorrect authorization in Smart Polling configuration in Guardian/CMC before 26.3.0 (CVE-2026-33391) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-33391

Incorrect authorization in Smart Polling configuration in Guardian/CMC before 26.3.0

Answer in brief

CVE-2026-33391 records a Unknown severity vulnerability in Incorrect authorization in Smart Polling configuration in Guardian/CMC before 26.3.0. The current sources do not mark it as known exploited. The current feed maps Nozomi Networks/CMC (generic), Nozomi Networks/Guardian (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 8, 2026Source checked Sep 8, 2026First seen by HOL Sep 8, 2026Material review Sep 8, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Nozomi Networks/CMC (generic), Nozomi Networks/Guardian (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Nozomi Networks/CMCgeneric	>=0 <26.3.0	26.3.0
Nozomi Networks/Guardiangeneric	>=0 <26.3.0	26.3.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for Nozomi Networks/CMC, Nozomi Networks/Guardian.
Review the reported fix. Update Nozomi Networks/CMC to 26.3.0; Nozomi Networks/Guardian to 26.3.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 8, 2026

Sources and claim methodology

Source referencesecurity.nozominetworks.com

Upstream source description

An access control vulnerability was discovered in the Smart Polling configuration functionality due to insufficient validation of user privileges. An authenticated user with limited privileges can remotely bypass the intended access control of the web management interface and modify the Smart Polling discovery configuration. This allows the attacker to disrupt the visibility of assets in the monitored network.

Quoted source text, attributed separately from HOL analysis.