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CVE-2024-21887

Critical CVSS 9.1 Known exploited

Published 2024-01-12 · last changed 2026-08-04 · added to CISA KEV 2024-01-10

This one is being exploited in the wild.

CISA added CVE-2024-21887 to the Known Exploited Vulnerabilities catalog on 2024-01-10. Federal agencies are required to remediate it on a deadline. If you have affected machines, this is the class of finding that moves ahead of the rest of the queue.

The fix

We hold no Microsoft remediation data for CVE-2024-21887, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

A command injection vulnerability in web components of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) allows an authenticated administrator to send specially crafted requests and execute arbitrary commands on the appliance.

Sources

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H