CVE-2026-16876

CRITICALCVSS 9.3/10EPSS 0.33%

Last modified

CVE-2026-16876 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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.. EPSS estimates a 0.33% chance of exploitation in the next 30 days.

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

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
NEC CorporationUNIVERGE IX-R/IX-VAll versions from Ver1.1 through Ver1.3, All versions from Ver1.4.21 through Ver1.4.28 and Ver1.5.23

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-16876?
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.
How severe is CVE-2026-16876?
CVE-2026-16876 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.
How do I fix CVE-2026-16876?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST