CVE-2018-20809

Description

A crafted message can cause the web server to crash with Pulse Secure Pulse Connect Secure (PCS) 8.3RX before 8.3R5 and Pulse Policy Secure 5.4RX before 5.4R5. This is not applicable to PCS 8.1RX.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.31% Top 15%
Vendor Advisory pulsesecure.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43877/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-20809?
CVE-2018-20809 has been scored as a high severity vulnerability.
How to fix CVE-2018-20809?
To fix CVE-2018-20809, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-20809 being actively exploited in the wild?
It is possible that CVE-2018-20809 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.