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Medium 5.2Published Nov 11, 2025
CVE-2025-54983Health check port on ZCC allows tunnel bypass
Updated under an hour ago ()
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It affects Zscaler Client Connector. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.2 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-772
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Zscaler
- NVD analysis
- Deferred
- Record last updated
- Nov 12, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.