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TI-2026-17438 Aliases CVE-2026-21655GHSA-g8rm-mhj7-46cg

C-CURE 9000 and Victor application server - Deserialization of Untrusted Data

Priority MEDIUM 40CWE-502Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

Deserialization of untrusted data vulnerability in Johnson Control victor on Windows, Johnson Controls CCure 9000, and Johnson Controls Victor Application Server allows capec-586. This issue affects victor: before 8.0; CCure 9000: before 3.2; Victor Application Server: before 4.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00492 42nd percentileScored 2026-11-07
Fix Fixed victor (Johnson Control): 8.0CCure 9000 (Johnson Controls): 3.2+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Johnson Controlvictorbefore 8.08.0Patch availableCNA
Johnson ControlsCCure 9000before 3.23.2Patch availableCNA
Johnson ControlsVictor Application Serverbefore 4.14.1Patch availableCNA
  • victor VendorJohnson Control Affected before 8.0 Fixed in 8.0 Patch available CNA
  • CCure 9000 VendorJohnson Controls Affected before 3.2 Fixed in 3.2 Patch available CNA
  • Victor Application Server VendorJohnson Controls Affected before 4.1 Fixed in 4.1 Patch available CNA

Remediation

  • Fix · CNA victor (Johnson Control) Fixed in 8.0
  • Fix · CNA CCure 9000 (Johnson Controls) Fixed in 3.2
  • Fix · CNA Victor Application Server (Johnson Controls) Fixed in 4.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21655
  2. 2026-10-03 Alias added: GHSA-g8rm-mhj7-46cg

References

  • TI-2025-28451 OS command injection in Johnson Control iSTAR Ultra, iSTAR Ultra SE, iSTAR Ultra G2… CVSS 4.0HIGH 8.7

Sources