Zscaler Client Connector is widely deployed by enterprises; a bypass of its controls can undermine org-wide network security and is notable to all IT teams.
CVE-2026-59569
Input-validation flaw in Zscaler Client Connector enabling security-control bypass.
Is CVE-2026-59569 being exploited?
Not confirmed. CVE-2026-59569 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.12% probability of exploitation in the next 30 days.
How severe is CVE-2026-59569?
CVE-2026-59569 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-59569?
Yes. A fix has been recorded for CVE-2026-59569. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-59569 affect?
CVE-2026-59569 affects Zscaler Client Connector (Android), Zscaler Client Connector (ChromeOS). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-59569?
Apply vendor update ASAP; restrict unmanaged endpoints and monitor network traffic.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Allows attackers to bypass Zscaler traffic inspection/policy enforcement on Android/ChromeOS, enabling access to malicious sites and possible data exfiltration.
Patch when possible
- affected< Android: 4.2.0.152
- affected< ChromeOS: 4.2.0.152
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.