CVE-2026-16876

WebGUI Authentication Bypass Allows Remote CLI Execution on NEC UNIVERGE IX‑R/IX‑V

Published Sep 7, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Nec
Nec univerge Ix
Vendors & Products Nec
Nec univerge Ix
Type Values Removed Values Added
Title WebGUI Authentication Bypass Allows Remote CLI Execution on NEC UNIVERGE IX‑R/IX‑V
Type Values Removed Values Added
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.
Weaknesses CWE-306
References
Metrics cvssV4_0

{'score': 9.3, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
NEC
Published
Updated
Sep 8, 2026, 3:32 PM
Reserved
Jul 24, 2026, 4:35 AM
Status
Deferred
Published
Sep 7, 2026, 2:17 AM
Modified
Sep 9, 2026, 4:04 PM