CVE-2020-8255

Severity: medium (CVSS 4.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-10-28 · updated 2026-06-17
Weakness: CWE-20

Description

A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary file reading vulnerability is fixed using encrypted URL blacklisting that prevents these messages.

Affected products

Pulse Secure Desktop Client: before 9.1; 9.1, 9.1-r1, 9.1-r2, 9.1-r3, 9.1-r3.1, 9.1-r4 (+8) — fixed in 9.1

How to fix

Upgrade to a fixed version: Pulse Secure Desktop Client 9.1. Check the vendor advisory for mitigations.

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44601
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44601

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