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High 8.8Published Aug 24, 2026
CVE-2026-59565Local and kernel denial-of-service
Updated under an hour ago ()
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It affects Zscaler Client Connector. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A remotely exploitable buffer overflow bug can cause a local and kernel denial-of-service attack on affected versions of Zscaler Client Connector on Windows.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-229
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Zscaler
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Zscaler Client Connector zscaler:client_connector (from the name) | before Windows: 4.6.0.457, 4.7.0.317, 4.8.0.232, 4.9.0.372 | CNA record |
References
- https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2026
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.