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01 Record

CVE-2025-54983

Health check port on ZCC allows tunnel bypass

MediumPUBLISHEDCNA: Zscaler
CNA base score5.2 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

02 Description

Health check port on ZCC allows tunnel bypass

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.13% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 2.4% of scored records. A rank, not a probability.
NVD base score
5.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
NVD analysis status
Deferred. NVD last modified this record on 2026-10-18.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-11-12 03:07Z11 MO AGO
Last updated
2025-11-12 18:18Z11 MO AGO
Reserved
2025-08-04
Assigning CNA
Zscaler
Record state
PUBLISHED
Severity
Medium (CVSS 5.2)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weaknesses
  • CWE-772Missing Release of Resource after Effective LifetimeBase
Data version
5.2
Document digest
562d6d3cc4d933f92ba21877e5aa37de80581cbf7b16be38c55504d57f8a9f46

05 Affected products

VendorProductVersionsPlatforms
ZscalerZscaler Client Connector4.6 to < 4.6.0.216, 4.7 to < 4.7.0.47Windows

06 References