SA44426 - 2020-04: Out-of-Cycle Advisory: Multiple Host Checker Vulnerabilities

Last Modified Date Aug 24, 2026 12:35:11 AM...

Command injection

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, launches a TCP server that accepts local connections on a random port. This can be reached by local HT...

CVE-2020-11581

Pulse Connect Secure (PCS) clients with Host Checker policy enabled on macOS, Linux, or Solaris are affected by CVE-2020-11581 due to an applet in tncc.jar that uses Runtime.getRuntime().exec(), enabling a MITM attacker to perform OS command injections via shell metacharacters in doCustomRemediat...