Traffic inspection bypass via incorrect startup configuration
Published Mar 31, 2026 · Updated Mar 31, 2026
Traffic inspection bypass in Zscaler Client Connector on Windows allows remote attackers to send limited traffic without inspection. Zscaler identifies an incorrect startup configuration as the cause but has not disclosed the affected setting or the operation that mishandles it. Exploitation requires user interaction and rare startup circumstances, and the bounded consequence is limited traffic evading inspection rather than a full client shutdown.
Summary
What happened
Traffic inspection bypass in Zscaler Client Connector on Windows allows remote attackers to send limited traffic without inspection. Zscaler identifies an incorrect startup configuration as the cause but has not disclosed the affected setting or the operation that mishandles it. Exploitation requires user interaction and rare startup circumstances, and the bounded consequence is limited traffic evading inspection rather than a full client shutdown.
The record
- CVE
- CVE-2026-22569
- Published
- Mar 31, 2026
- Updated
- Mar 31, 2026
- Vendor
- Zscaler
- Product
- Zscaler Client Connector
- Classifications
- CWE-1289, T1562.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 31, 2026CVE publishedPublication date reported by the CVE source.
- Mar 31, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=4.7 <4.7.0.141
- Affected versionversion=4.8 <4.8.0.63
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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