CVE-2026-25687
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
ProductClient Connector
PublishedSep 14, 2026
First seenSep 14, 2026
Weakness typeCWE-366CWE-366
How to fix
Update
- Zscaler Client Connector4.6.0.486, 4.7.0.350, 4.8.0.267, 4.9.0.412 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Zscaler Client Connector | 4.6 ≤ v < 4.6.0.486, 4.7 ≤ v < 4.7.0.350, 4.8 ≤ v < 4.8.0.267, 4.9 ≤ v < 4.9.0.412 | 4.6.0.486, 4.7.0.350, 4.8.0.267, 4.9.0.412 |
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