CVE-2026-33391 PUBLISHED

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

Assigner: Nozomi
Reserved: 19.03.2026 Published: 08.09.2026 Updated: 08.09.2026

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.

CVSS Vector: CVSS: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 Score: 5.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CVSS Score: 5.4

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Nozomi Networks
Product	Guardian
Versions	Default: unaffected affected from 0 to 26.3.0 (excl.)

Vendor	Nozomi Networks
Product	CMC
Versions	Default: unaffected affected from 0 to 26.3.0 (excl.)

Workarounds

Review your Smart Polling discovery configuration.

Solutions

Upgrade to v26.3.0 or later.

Credits

This issue was found by one of our customers during a VAPT testing session. finder

References

https://security.nozominetworks.com/NN-2026:17-01

Problem Types

CWE-863 Incorrect authorization CWE

Impacts

CAPEC-122 Privilege Abuse