CVE-2020-8255

Name: CVE-2020-8255
Creator: NVD / NIST
Published: 2020-10-28T13:15:12.963+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 2.26%

Last modified Jun 17, 2026

CVE-2020-8255 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. 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.. EPSS estimates a 2.26% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.9/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

2.26%

80.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Pulsesecure	Pulse Secure Desktop Client	< 9.1
Pulsesecure	Pulse Secure Desktop Client	9.1

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44601Vendor Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44601Vendor Advisory

Timeline

Published: Oct 28, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8255?

How severe is CVE-2020-8255?

CVE-2020-8255 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 2.26% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8255?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8255?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST