{"id":"CVE-2023-28806","aliases":["EUVD-2023-32441","GHSA-hrw8-hpf8-7q72"],"status":"published","title":"Signature validation error in DLL allows disabling anti-tampering protection","description":"An Improper Validation of signature in Zscaler Client Connector on Windows allows an authenticated user to disable anti-tampering. This issue affects Client Connector on Windows \u003c4.2.0.190.","severity":{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00188,"percentile":0.08534,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2024-08-06T15:41:01Z","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=4.2.0.190","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28806"},{"url":"https://github.com/advisories/GHSA-hrw8-hpf8-7q72"}],"sources":{"cve":[{"id":"CVE-2023-28806","title":"Signature validation error in DLL allows disabling anti-tampering protection","description":"An Improper Validation of signature in Zscaler Client Connector on Windows allows an authenticated user to disable anti-tampering. This issue affects Client Connector on Windows \u003c4.2.0.190.","status":"published","published":"2024-08-06T15:41:01.883Z","modified":"2024-08-06T17:30:31.651Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:35:32.752775Z"}],"euvd":[{"id":"EUVD-2023-32441","description":"An Improper Validation of signature in Zscaler Client Connector on Windows allows an authenticated user to disable anti-tampering. This issue affects Client Connector on Windows \u003c4.2.0.190.","status":"published","published":"2024-08-06T15:41:01Z","modified":"2024-08-06T17:30:31Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-03T01:56:26.749939Z"}],"ghsa":[{"id":"GHSA-hrw8-hpf8-7q72","title":"An Improper Validation of signature in Zscaler Client Connector on Windows allows an...","description":"An Improper Validation of signature in Zscaler Client Connector on Windows allows an authenticated user to disable anti-tampering. This issue affects Client Connector on Windows \u003c4.2.0.190.","status":"published","published":"2024-08-06T18:30:56Z","modified":"2024-08-06T18:31:08Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:57:52.387174Z"}],"nvd":[{"id":"CVE-2023-28806","description":"An Improper Validation of signature in Zscaler Client Connector on Windows allows an authenticated user to disable anti-tampering. This issue affects Client Connector on Windows \u003c4.2.0.190.","status":"published","published":"2024-08-06T16:15:46.453Z","modified":"2026-06-17T05:48:48.743Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:09:17.205287Z"}]}}