CVE-2026-16876

CriticalCVSS 9.3/10Last modified Sep 9, 2026

Description

An authentication bypass vulnerability exists in the WebGUI of Series UNIVERGE IX-R/IX-V. A user could bypass authentication and execute arbitrary CLI commands by tampering with WebGUI messages and sending them to the device via internet.

Metrics

CVSS 4.0 9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/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

Weakness enumeration

CWE-306

Affected software

Vendor	Product	Versions
NEC Corporation	UNIVERGE IX-R/IX-V	All versions from Ver1.1 through Ver1.3, All versions from Ver1.4.21 through Ver1.4.28 and Ver1.5.23

References

https://jpn.nec.com/security-info/secinfo/nv26-005_en.html

Timeline

Published: Sep 7, 2026
Last modified: Sep 9, 2026
NVD status: Deferred

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