What is CVE-2018-14366?

CVE-2018-14366 is a medium-severity vulnerability in Ivanti Connect Secure, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2018-09-06.

How severe is CVE-2018-14366?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Ivanti Connect Secure

CVE-2018-14366

download.cgi in Pulse Secure Pulse Connect Secure 8.1RX before 8.1R13 and 8.3RX before 8.3R4 and Pulse Policy Secure through 5.2RX before 5.2R10 and 5.4RX before 5.4R4 have an Open Redirect Vulnerability.

Vulnerability class: Open Redirect

Published 2018-09-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.015 (72.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Ivanti Connect Secure — versions 8.1, 8.3
Pulsesecure Pulse Connect Secure — versions 8.1r1.0, 8.1rx, 8.3rx
Pulsesecure Pulse Policy Secure — versions 5.2r1.0, 5.2r2.0, 5.2r3.0

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43877 (Vendor Advisory)

Frequently asked questions

What is CVE-2018-14366?: CVE-2018-14366 is a medium-severity vulnerability in Ivanti Connect Secure, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2018-09-06.
How severe is CVE-2018-14366?: Medium severity. CVSS v3 base score is 6.1 out of 10.