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Vendor Solution
Upgrade to v26.4.0 or later.
Vendor Workaround
Use internal firewall features to limit access to the web management interface.
Tracking
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| Link | Providers |
|---|---|
| https://security.nozominetworks.com/NN-2026:21-01 |
|
Thu, 29 Oct 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 29 Oct 2026 11:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A signature verification vulnerability was discovered in the update installation functionality due to inconsistent validation of the update bundle contents. An attacker with administrative privileges can remotely supply a crafted update bundle that passes signature verification but runs an unsigned script when the bundle is installed. The script runs with root privileges, allowing the attacker to read or modify sensitive data, change the appliance configuration, or shut down the appliance. | |
| Title | Update bundle signature bypass in Guardian/CMC before 26.4.0 | |
| First Time appeared |
Nozomi Networks
Nozomi Networks cmc Nozomi Networks guardian |
|
| Weaknesses | CWE-347 | |
| CPEs | cpe:2.3:a:nozomi_networks:cmc:*:*:*:*:*:*:*:* cpe:2.3:a:nozomi_networks:guardian:*:*:*:*:*:*:*:* |
|
| Vendors & Products |
Nozomi Networks
Nozomi Networks cmc Nozomi Networks guardian |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: Nozomi
Published:
Updated: 2026-10-29T12:36:53.310Z
Reserved: 2026-03-24T16:06:11.951Z
Link: CVE-2026-33923
Updated: 2026-10-29T12:30:13.690Z
Status : Received
Published: 2026-10-29T11:17:32.847
Modified: 2026-10-29T13:17:10.847
Link: CVE-2026-33923
No data.
OpenCVE Enrichment
Updated: 2026-10-29T13:45:17Z
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CWE-347
Improper Verification of Cryptographic Signature