What is GHSA-4wwc-hgc4-j27v?

GHSA-4wwc-hgc4-j27v is a security advisory published by GitHub Security Advisories with High severity. A race condition in the ZPA tunnel handler of affected versions of Zscaler Client Connector (ZCC)...

Which CVE IDs does GHSA-4wwc-hgc4-j27v cover?

GHSA-4wwc-hgc4-j27v covers the following CVE IDs: CVE-2026-25687. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-4wwc-hgc4-j27v?

GHSA-4wwc-hgc4-j27v has a CVSS v3 base score of 8.1, published by GitHub Security Advisories.

GHSA-4wwc-hgc4-j27vHighCVSS 8.1

A race condition in the ZPA tunnel handler of affected versions of Zscaler Client Connector (ZCC)...

Vendor

GitHub Security Advisories

Published

September 14, 2026

Last Modified

September 14, 2026

🔗 CVE IDs covered (1)

CVE-2026-25687 →

📋 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.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-25687
https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2026
https://github.com/advisories/GHSA-4wwc-hgc4-j27v