CVE-2020-11580: Pulse Secure Pulse Connect Secure

Critical severity, CVSS 9.1. EPSS: 1.1% chance of exploitation in the next 30 days.

An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, accepts an arbitrary SSL certificate.

Affected products

• Pulse Secure Pulse Connect Secure: up to and including 2020-04-06
• Pulse Secure Pulse Policy Secure: up to and including 2020-04-06

Published 2020-04-06. Last modified 2026-06-17.