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Solution
Upgrade Guardian/CMC to v26.3.0 or later. Upgrade Arc to v2.7.0 or later.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://security.nozominetworks.com/NN-2026:20-01 |
|
Tue, 08 Sep 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 08 Sep 2026 14:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | An improper certificate/host key validation vulnerability was discovered in the Smart Polling functionality, which established encrypted connections to target devices without validating the remote host's identity, and no option was provided to enable it. A man-in-the-middle attacker positioned between a sensor and a polled device can, during a polling session, impersonate the device and intercept the communication, including the credentials used to access it. The captured credentials can then be replayed to authenticate against the device itself or against other devices sharing the same credentials, allowing the attacker to access and tamper with the device's data and to disrupt its operations. | |
| Title | Disabled and non-configurable certificate/host key validation in Smart Polling in Guardian/CMC before 26.3.0 and Arc before v2.7.0 | |
| First Time appeared |
Nozomi Networks
Nozomi Networks arc Nozomi Networks cmc Nozomi Networks guardian |
|
| Weaknesses | CWE-671 | |
| CPEs | cpe:2.3:a:nozomi_networks:arc:*:*:*:*:*:*:*:* cpe:2.3:a:nozomi_networks:cmc:*:*:*:*:*:*:*:* cpe:2.3:a:nozomi_networks:guardian:*:*:*:*:*:*:*:* |
|
| Vendors & Products |
Nozomi Networks
Nozomi Networks arc Nozomi Networks cmc Nozomi Networks guardian |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: Nozomi
Published:
Updated: 2026-09-08T14:19:48.707Z
Reserved: 2026-03-19T11:28:43.172Z
Link: CVE-2026-33389
Updated: 2026-09-08T14:19:44.295Z
Status : Received
Published: 2026-09-08T14:17:22.390
Modified: 2026-09-08T15:18:43.370
Link: CVE-2026-33389
No data.
OpenCVE Enrichment
Updated: 2026-09-08T16:15:15Z