NN-2026:17-01
Incorrect authorization in Smart Polling configuration in Guardian/CMC before 26.3.0
Last update: 2026-09-08
| Advisory ID | NN-2026:17-01 |
|---|---|
| Topic | Incorrect authorization in Smart Polling configuration in Guardian/CMC before 26.3.0 |
| CWE Impact | CWE-863: Incorrect Authorization |
| Issue date | 2026-09-08 |
| Affects | Guardian, CMC < v26.3.0 |
| CVE Name(s) | CVE-2026-33391 |
| CVSS Details | 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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
| CVSS Score | 5.3 (CVSS v4.0) 5.4 (CVSS v3.1) |
| CVE Risk Level | Medium (CVSS v4.0) Medium (CVSS v3.1) |
| Risk Level for Nozomi customers | Medium |
Summary
An access control vulnerability was discovered in the Smart Polling configuration functionality due to insufficient validation of user privileges.
Impact
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.
Affected Products
Guardian, CMC < v26.3.0
Workarounds and Mitigations
Use internal firewall features to limit access to the web management interface. Review all accounts with access to it and delete unnecessary ones. Review your Smart Polling discovery configuration.
Solutions
Upgrade to v26.3.0 or later.
Modification History
2026-09-08: Initial revision
Related Links
Acknowledgements
We thank the following parties for their efforts:
- one of our customers for finding this issue during a VAPT testing session
Contact
Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com.More contact details on the PSIRT page.