Is CVE-2026-42222 actively exploited?

No active exploitation of CVE-2026-42222 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42222 be exploited remotely?

Yes. CVE-2026-42222 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42222?

CVE-2026-42222 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2026-42222

CRITICAL

CVE-2026-42222

CWE-284Published: May 4, 2026· Updated: May 6, 2026

9.8

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.4th

Official Description

Nginx UI is a web user interface for the Nginx web server. In version 2.3.5, an unauthenticated bootstrap takeover exists in nginx-ui during the initial installation window exposed by POST /api/install. At time of publication no public patches are available.

NVD Source

Technical Analysis

CVE-2026-42222 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.