CVE-2021-22893: Ivanti Pulse Connect Secure Use-After-Free Vulnerability

Critical severity, CVSS 10.0. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 47.2% chance of exploitation in the next 30 days.

Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild.

Affected products

• Ivanti Connect Secure: version 9.0 only; version 9.1 only

Published 2021-04-23. Last modified 2026-08-12.