Ivanti has released a security update to address vulnerability (CVE-2021-22965) affecting Pulse Connect Secure (PCS) software. By sending a specially crafted request, a remote attacker could exploit this vulnerability to cause a denial of service. According to Pulse Connect Secure security advisory, this issue is fixed in PCS 9.1R12.1, PCS 9.1R13 versions – pulsesecure.net.