Search/CVE-2026-59564
● CVE — Critical

CVE-2026-59564

DiscoveredAug 24, 2026UpdatedAug 28, 2026

An authentication bypass issue exists in communications between affected versions of the Zscaler Client Connector and the Zscaler Client Connector Portal.

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CVSS v3.1
9.1 CRITICAL
EPSS
0.53%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 26, 2026 → Sep 25, 2026
▲ 0.23pp
0.30% → 0.53% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Connections
1 relationships
Timeline
disclosure → media coverage
Aug 24, 2026
Disclosure — published as a CVE record. · last revised by NVD Aug 28, 2026