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CVE-2026-21661

Published May 6, 2026 CWE-427 EPSS 0.11% (1th pctl)

Overview

CVE-2026-21661 is a known-severity vulnerability. It was published on May 6, 2026.

Technical Description

An Uncontrolled Search Path Element vulnerability in JohnsonControls AC2000 on Windows allows Leveraging/Manipulating Configuration File Search Paths.

This issue affects AC2000: from 10.6 before release 10, from 11.0 before release 9, from 12 before release 3.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Frequently Asked Questions

What is CVE-2026-21661?

CVE-2026-21661 is a known-severity vulnerability. It was published on May 6, 2026.

How severe is CVE-2026-21661?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-21661?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-21661?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-21661 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.