{"api_version":"1","generated_at":"2026-07-24T18:53:50+00:00","cve":"CVE-2023-28803","urls":{"html":"https://cve.report/CVE-2023-28803","api":"https://cve.report/api/cve/CVE-2023-28803.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-28803","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-28803"},"summary":{"title":"CVE-2023-28803","description":"An authentication bypass by spoofing of a device with a synthetic IP address is possible in Zscaler Client Connector on Windows, allowing a functionality bypass. This issue affects Client Connector: before 3.9.","state":"PUBLIC","assigner":"cve@zscaler.com","published_at":"2023-10-23 14:15:00","updated_at":"2023-10-27 00:42:00"},"problem_types":["CWE-290"],"metrics":[],"references":[{"url":"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023","name":"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023","refsource":"MISC","tags":[],"title":"Client Connector App Release Summary (2023) | Zscaler","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-28803","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28803","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"28803","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"zscaler","cpe5":"client_connector","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"windows","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-28803","ASSIGNER":"cve@zscaler.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"An authentication bypass by spoofing of a device with a synthetic IP address is possible in Zscaler Client Connector on Windows, allowing a functionality bypass. This issue affects Client Connector: before 3.9.\n\n"}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-290 Authentication Bypass by Spoofing","cweId":"CWE-290"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"Zscaler","product":{"product_data":[{"product_name":"Client Connector","version":{"version_data":[{"version_affected":"<","version_name":"0","version_value":"3.9"}]}}]}}]}},"references":{"reference_data":[{"url":"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023","refsource":"MISC","name":"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023"}]},"generator":{"engine":"Vulnogram 0.1.0-dev"},"source":{"discovery":"UNKNOWN"},"credits":[{"lang":"en","value":"Regions Bank Red Team"}],"impact":{"cvss":[{"attackComplexity":"HIGH","attackVector":"ADJACENT_NETWORK","availabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"}]}},"nvd":{"publishedDate":"2023-10-23 14:15:00","lastModifiedDate":"2023-10-27 00:42:00","problem_types":["CWE-290"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:windows:*:*","versionEndExcluding":"3.9","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}