{"id":"CVE-2023-28802","aliases":["EUVD-2023-32437","GHSA-67fh-hvmh-rhv8"],"status":"published","title":"Disable Zscaler using machine tunnel restart","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.","severity":{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00229,"percentile":0.13754,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-354"],"published":"2023-11-21T10:51:50Z","modified":"2026-06-17T05:48:48Z","products":[{"vendor":"zscaler","product":"client connector"},{"vendor":"zscaler","product":"client_connector"}],"references":[{"url":"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=Windows\u0026applicable_version=4.2","tags":["x_transferred","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28802"},{"url":"https://github.com/advisories/GHSA-67fh-hvmh-rhv8"}],"sources":{"cve":[{"id":"CVE-2023-28802","title":"Disable Zscaler using machine tunnel restart","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.","status":"published","published":"2023-11-21T10:51:50.755Z","modified":"2026-01-06T06:15:23.558Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-354"],"updated_at":"2026-11-02T14:35:32.752775Z"}],"euvd":[{"id":"EUVD-2023-32437","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.","status":"published","published":"2023-11-21T10:51:50Z","modified":"2026-01-06T06:15:23Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:48:55.49901Z"}],"ghsa":[{"id":"GHSA-67fh-hvmh-rhv8","title":"An Improper Validation of Integrity Check Value in Zscaler Client Connector on Windows allows an...","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.","status":"published","published":"2023-11-21T12:30:26Z","modified":"2026-01-06T09:31:29Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"cwes":["CWE-354"],"updated_at":"2026-11-02T15:05:30.549003Z"}],"nvd":[{"id":"CVE-2023-28802","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.","status":"published","published":"2023-11-21T11:15:08.633Z","modified":"2026-06-17T05:48:48.23Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"primary"}],"cwes":["CWE-354"],"updated_at":"2026-11-02T14:08:47.966245Z"}]}}