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.
History

Tue, 15 Sep 2026 04:45:00 +0000

Type Values Removed Values Added
First Time appeared Zscaler
Zscaler client Connector
Vendors & Products Zscaler
Zscaler client Connector

Mon, 14 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
Description 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.
Title ZCC race condition in ZPA tunnel handler
Weaknesses CWE-366
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Zscaler

Published: 2026-09-14T14:37:04.331Z

Updated: 2026-09-15T03:56:03.896Z

Reserved: 2026-02-05T05:00:40.582Z

Link: CVE-2026-25687

cve-icon Vulnrichment

Updated: 2026-09-14T15:39:38.835Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-14T15:17:05.090

Modified: 2026-09-18T19:08:02.707

Link: CVE-2026-25687

cve-icon Redhat

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