CVE-2026-25687: ZCC race condition in ZPA tunnel handler
Zscaler · Client Connector
Vendor fix available · Affected: Zscaler Client Connector · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 32% of scored CVEs
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Zscaler · Client Connectorfrom 4.6 before 4.6.0.486; from 4.7 before 4.7.0.350; from 4.8 before 4.8.0.267; from 4.9 before 4.9.0.412
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Zscaler
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-25687 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.