VulnerabilityModified

CVE-2026-33390

An Incorrect Privilege Assignment vulnerability was discovered in the synchronization functionality due to Arc sensors receiving CLI permissions.

HIGH 7.2EPSS 0.40%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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.

CVSS 4.0: 7.2 HIGHCVSS: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/M
EPSS: 0.40% probability · 34th percentile
CISA KEV: Not listed
Weakness: CWE-266
Affected: nozominetworks/cmc · nozominetworks/guardian
Source: prodsec@nozominetworks.com

References

https://security.nozominetworks.com/NN-2026:13-01Mitigation, Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-827968.html

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.