What is CVE-2016-4789?

CVE-2016-4789 is a medium-severity vulnerability in Ivanti Connect Secure, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2016-05-26.

How severe is CVE-2016-4789?

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

XSS in Ivanti Connect Secure

CVE-2016-4789

Cross-site scripting (XSS) vulnerability in the system configuration section in the administrative user interface in Pulse Connect Secure (PCS) 8.2 before 8.2r1, 8.1 before 8.1r2, 8.0 before 8.0r9, and 7.4 before 7.4r13.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2016-05-26 · 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: 0.011 (64.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Ivanti Connect Secure — versions 8.1, 8.0, 8.2
Pulsesecure Pulse Connect Secure — versions 8.1r1.0, 7.4

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.securitytracker.com/id/1035932 (vdb-entry)
kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40209 (Vendor Advisory)

Frequently asked questions

What is CVE-2016-4789?: CVE-2016-4789 is a medium-severity vulnerability in Ivanti Connect Secure, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2016-05-26.
How severe is CVE-2016-4789?: Medium severity. CVSS v3 base score is 6.1 out of 10.