CVE-2025-54983: Health check port on ZCC allows tunnel bypass
Zscaler · 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 2% of scored CVEs
DescriptionCVE.org
A health check port on Zscaler Client Connector on Windows, versions 4.6 < 4.6.0.216 and 4.7 < 4.7.0.47, which under specific circumstances was not released after use, allowed traffic to potentially bypass ZCC forwarding controls.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Zscaler · Zscaler Client Connectorfrom 4.6 before 4.6.0.216; from 4.7 before 4.7.0.47
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
- November 2025
CoverageNo articles yet
No CyberSIXT article names CVE-2025-54983 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.