CVE-2026-25687

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.

  • Published Sep 14, 2026
  • CVSS 8.1 high
  • 0.4% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-25687 at the National Vulnerability Database