EUVD-2026-42536
GHSA-w68v-42v6-6q7h
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable sync abusable by an authenticated limited user (PR:L, AC:L) with no confidentiality impact but full config-integrity and availability loss on the device.
Primary rating from Vendor (Nozomi).
CVSS VectorVendor: Nozomi
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionCVE.org
An Incorrect Privilege Assignment vulnerability was discovered in the synchronization functionality due to Arc sensors receiving CLI permissions. An authenticated user with limited privileges can push administrative CLI commands through the sync, altering the device configuration, and/or affecting its availability.
AnalysisAI
Privilege escalation via configuration synchronization in Nozomi Networks Guardian and Central Management Console (CMC) lets an authenticated low-privilege user push administrative CLI commands to managed Arc sensors, because those sensors incorrectly inherit CLI permissions during sync. Successful abuse alters device configuration and can degrade or disable sensor availability, undermining OT/ICS monitoring integrity. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated account with limited privileges on a Nozomi Guardian/CMC deployment (PR:L) plus network access to the management/synchronization interface (AV:N); no user interaction and no non-default feature toggle is described - the flaw resides in the standard sync-to-Arc-sensor configuration path, and the specific prerequisite is that the account can invoke the synchronization functionality that pushes config to Arc sensors. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor-supplied CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H, base 7.2) indicates a network-reachable attack requiring only low privilege, no user interaction, and no special attack requirements, with high integrity and availability impact but no confidentiality impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who holds a legitimate limited-privilege account on a Guardian/CMC deployment authenticates over the network and crafts administrative CLI commands, then triggers the synchronization function to push them to one or more Arc sensors. Because the sensors incorrectly accept CLI permissions from the sync, the commands execute administratively, letting the attacker rewrite sensor configuration or knock the sensor offline. … |
| Remediation | Apply the fix described in Nozomi Networks advisory NN-2026:13-01 (https://security.nozominetworks.com/NN-2026:13-01); an exact patched version is not included in the provided data, so obtain the fixed build directly from that advisory before deployment. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: restrict Guardian and CMC administrative console access to essential personnel and audit current user permission assignments. …
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Same weakness CWE-266 – Incorrect Privilege Assignment
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External POC / Exploit Code
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