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TI-2023-07307 Aliases CVE-2023-20891GHSA-m8v3-f26v-mhfj

VMware Tanzu Application Service for VMs and Isolation Segment information disclosure vulnerability

Priority LOW 30CWE-532Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-532.

Summary

The VMware Tanzu Application Service for VMs and Isolation Segment contain an information disclosure vulnerability due to the logging of credentials in hex encoding in platform system audit logs. A malicious non-admin user who has access to the platform system audit logs can access hex encoded CF API admin credentials and can push new malicious versions of an application. In a default deployment non-admin users do not have access to the platform system audit logs.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00637 50th percentileScored 2026-11-07
Fix Fixed VMware Tanzu Application Service for VMs (VMware): 4.0.5, 3.0.14, 2.13.24 +1Isolation segment (VMware): 4.0.4, 3.0.13, 2.13.20 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
VMwareVMware Tanzu Application Service for VMs4.0.x to before 4.0.5; 3.0.x to before 3.0.14; 2.13.x to before 2.13.24; 2.11.x to before 2.11.424.0.5, 3.0.14, 2.13.24, 2.11.42Patch availableCNA
VMwareIsolation segment4.0.x to before 4.0.4; 3.0.x to before 3.0.13; 2.13.x to before 2.13.20; 2.11.x to before 2.11.354.0.4, 3.0.13, 2.13.20, 2.11.35Patch availableCNA
  • VMware Tanzu Application Service for VMs VendorVMware Affected 4.0.x to before 4.0.5; 3.0.x to before 3.0.14; 2.13.x to before 2.13.24; 2.11.x to before 2.11.42 Fixed in 4.0.5, 3.0.14, 2.13.24, 2.11.42 Patch available CNA
  • Isolation segment VendorVMware Affected 4.0.x to before 4.0.4; 3.0.x to before 3.0.13; 2.13.x to before 2.13.20; 2.11.x to before 2.11.35 Fixed in 4.0.4, 3.0.13, 2.13.20, 2.11.35 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:vmware:isolation_segment:*:*:*:*:*:*:*:*2.11.0 to before 2.11.35; 2.13.0 to before 2.13.20; 3.0.0 to before 3.0.13; 4.0.0 to before 4.0.4VulnerableVMware
cpe:2.3:a:vmware:tanzu_application_service_for_virtual_machines:*:*:*:*:*:*:*:*2.11.0 to before 2.11.42; 2.13.0 to before 2.13.24; 3.0.0 to before 3.0.14; 4.0.0 to before 4.0.5VulnerableVMware
  • cpe:2.3:a:vmware:isolation_segment:*:*:*:*:*:*:*:* Versions 2.11.0 to before 2.11.35; 2.13.0 to before 2.13.20; 3.0.0 to before 3.0.13; 4.0.0 to before 4.0.4 Vulnerable ·VMware
  • cpe:2.3:a:vmware:tanzu_application_service_for_virtual_machines:*:*:*:*:*:*:*:* Versions 2.11.0 to before 2.11.42; 2.13.0 to before 2.13.24; 3.0.0 to before 3.0.14; 4.0.0 to before 4.0.5 Vulnerable ·VMware

Remediation

  • Fix · CNA VMware Tanzu Application Service for VMs (VMware) Fixed in 4.0.5, 3.0.14, 2.13.24, 2.11.42
  • Fix · CNA Isolation segment (VMware) Fixed in 4.0.4, 3.0.13, 2.13.20, 2.11.35

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-20891
  2. 2026-10-03 Alias added: GHSA-m8v3-f26v-mhfj
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Patch 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences