CVE-2026-33391 Incorrect authorization in Smart Polling configuration in Guardian/CMC before 26.3.0
Authenticated low-privilege users can bypass access controls to modify Smart Polling configurations, disrupting asset visibility in Nozomi Networks CMC.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-33391?
CVE-2026-33391 is a medium-severity missing authorization vulnerability in Nozomi Networks CMC, published on 8 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-863
Which versions are affected by CVE-2026-33391?
How do I fix CVE-2026-33391?
No fix has been published for CVE-2026-33391 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-33391 being exploited?
There is no known exploitation of CVE-2026-33391 in the wild and no public exploit code.
Sources
Also known as GHSA-jx7f-4jrv-rjh9.