CVE-2026-16876
Critical
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.
SeverityCritical
CVSS9.3
Exploit probability—
ProductUNIVERGE IX-R/IX-V
PublishedSep 7, 2026
First seenSep 7, 2026
Weakness typeCWE-306Missing authentication for critical function
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| 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 | — |
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