CVE-2018-20812: Pulse Secure Desktop Client

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

An information exposure issue where IPv6 DNS traffic would be sent outside of the VPN tunnel (when Traffic Enforcement was enabled) exists in Pulse Secure Pulse Secure Desktop 9.0R1 and below. This is applicable only to dual-stack (IPv4/IPv6) endpoints.

Affected products

• Pulse Secure Pulse Secure Desktop Client: version 4.0 only; version 5.1 only; version 5.1r only; version 5.3 only; version 9.0 only

Published 2019-06-28. Last modified 2026-06-17.