CVE-2026-59568: CWE-20 Improper input validation in Zscaler Client Connector
Description
CVE-2026-59568 is a critical vulnerability in Zscaler Client Connector involving improper input validation. It allows an unauthenticated, unprivileged attacker to execute arbitrary code remotely within the context of the Zscaler Client Connector. The vulnerability has a high CVSS score of 9.1, indicating severe impact on confidentiality and integrity. No affected versions or patch information are provided, and no known exploits are reported in the wild.
CVSS v3.1
Score 9.1critical
Affected software
Zscaler
Client Connector
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-59568) in Zscaler Client Connector is due to improper input validation (CWE-20). It enables remote code execution by unauthenticated and unprivileged users, allowing arbitrary code execution in the ZCC context. The CVSS 3.1 base score is 9.1 with vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N, indicating network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, and high impact on confidentiality and integrity but no impact on availability. No patch or remediation level is currently specified, and no affected versions are identified.
Potential Impact
An unauthenticated, unprivileged attacker can remotely execute arbitrary code in the context of the Zscaler Client Connector, potentially compromising the confidentiality and integrity of the system. This could lead to unauthorized access or control over the affected software environment. Availability is not impacted according to the CVSS vector.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Zscaler
- Date Reserved
- 2026-07-06T06:18:59.633Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8c504bacd9273b49a22814
Added to database: 08/24/2026, 14:08:11 UTC
Last enriched: 09/10/2026, 10:37:51 UTC
Last updated: 10/08/2026, 18:48:47 UTC
Views: 190
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