CVE-2018-20812

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-06-28 · updated 2026-06-17
Weakness: CWE-200

Description

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 Desktop Client: 4.0-r1.0, 4.0-r10.0, 4.0-r11.0, 4.0-r11.1, 4.0-r12.0, 4.0-r13.0 (+47)

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43877/
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43877/

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