CVE-2026-59568: critical vulnerability in Zscaler Client Connector
Remote Code Execution
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.7%
Multiple vulnerabilities on affected versions of Zscaler Client Connector allow remote code execution, giving an unauthenticated, unprivileged user the ability to execute arbitrary code in the ZCC context.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
Zscaler · Client ConnectorRelated CVEs — Zscaler Client Connector
In the same product, most dangerous first.
CVE-2024-23483HIGHLocal Privilege Escalation via lack of input validationEPSS 0.7%CVE-2023-28800HIGHOutput encoding missing in redrurl parameterEPSS 0.5%CVE-2026-59564CRITICALAuthentication bypass between ZCC and client connector portalEPSS 0.5%CVE-2026-59565HIGHLocal and kernel denial-of-serviceEPSS 0.5%CVE-2024-23459HIGHMultiple Arbitrary Creates/Overwrites by link followingEPSS 0.5%CVE-2023-28799HIGHCVE-2023-28799EPSS 0.4%