CVE-2026-59565 json
Local and kernel denial-of-service
published 2026-08-24 2 mo ago modified 2026-10-12 27 d ago also EUVD-2026-64881
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Zscaler Client Connector Windows: 4.6.0.457, 4.7.0.317, 4.8.0.232, 4.9.0.372
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Zscaler Client Connector
Classification
- Weakness
-
- CWE-229 Improper Handling of Values
References
Sources
- CVE List CVE-2026-59565
- NVD CVE-2026-59565
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