CVE-2023-28802
Disable Zscaler using machine tunnel restart
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.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Disable Zscaler using machine tunnel restart
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.
- Record
CVE-2023-28802- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-354
- Updated
- 2026-11-02
EUVDEUVD-2023-32437
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.
- Record
EUVD-2023-32437- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-67fh-hvmh-rhv8
An Improper Validation of Integrity Check Value in Zscaler Client Connector on Windows allows an...
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.
- Record
GHSA-67fh-hvmh-rhv8- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-354
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-28802- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N - CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L - Weakness
- CWE-354
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-28802 is a medium vulnerability (CVSS 4.9) in Zscaler Client Connector, published November 21, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 13th percentile. No source names a fixed version.