How severe is CVE-2016-4789?

CVE-2016-4789 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2016-4789 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4789?

CVE-2016-4789 primarily affects Ivanti Connect Secure. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-4789?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-4789 published?

CVE-2016-4789 was published on 2016-05-26 and last updated on 2026-06-17.

CVE-2016-4789

CVE-2016-4789 is a medium-severity vulnerability in Ivanti Connect Secure with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ivanti Connect Secure
Published: 2016-05-26
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2016-4789?: CVE-2016-4789 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2016-4789 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4789?: CVE-2016-4789 primarily affects Ivanti Connect Secure. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-4789?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4789 published?: CVE-2016-4789 was published on 2016-05-26 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:ivanti:connect_secure:8.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.1r1.0:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:7.4:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:8.2:*:*:*:*:*:*:*

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