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Client Connector EUVDEUVD-2026-77536

| CVE-2026-25687 HIGH
Race Condition within a Thread (CWE-366)
2026-09-14 Zscaler GHSA-4wwc-hgc4-j27v
8.1
CVSS 3.1 · Vendor: Zscaler
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Severity by source

Vendor (Zscaler) PRIMARY
8.1 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (Zscaler) · only source for this CVE.

CVSS VectorVendor: Zscaler

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Sep 15, 2026 - 11:32 vuln.today
Patch available
Sep 14, 2026 - 16:02 EUVD
CVE Published
Sep 14, 2026 - 14:37 cve.org
HIGH 8.1

DescriptionCVE.org

A race condition in the ZPA tunnel handler of affected versions of Zscaler Client Connector (ZCC) allows a heap corruption, resulting in a denial of service (client crash) and potentially arbitrary code execution in the context of the ZCC process.

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EUVD-2026-77536 vulnerability details – vuln.today

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