CVE-2023-28802

Name: CVE-2023-28802
Creator: NVD / NIST
Published: 2023-11-21T11:15:08.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2023-28802 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. An Improper Validation of Integrity Check Value in Zscaler Client Connector on Windows allows an authenticated user to disable ZIA/ZPA by interrupting the service restart from Zscaler Diagnostics. This issue affects Client Connector: before 4.2.0.149.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

An Improper Validation of Integrity Check Value in Zscaler Client Connector on Windows allows an authenticated user to disable ZIA/ZPA by interrupting the service restart from Zscaler Diagnostics. This issue affects Client Connector: before 4.2.0.149.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.23%

13.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Zscaler	Client Connector	< 4.2.0.149

References

Timeline

Published: Nov 21, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-28802?

How severe is CVE-2023-28802?

CVE-2023-28802 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2023-28802?

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-2023-28802?

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

Scan your code now

Source: NVD / NIST