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Review reviewHigh

CVE-2026-21655

Johnson Control victor

Deserialization of untrusted data vulnerability in Johnson Control victor on Windows allows capec-586. This issue affects victor: from 2.9 before 3.0.

CVSS
8.7
EPSS
0.17%
6.13% percentile
CISA KEV
Not listed
Published
2026.07.24
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.17%
Technical severityCVSS 8.7

Vulnerability overview

Deserialization of untrusted data vulnerability in Johnson Control victor on Windows allows capec-586. This issue affects victor: from 2.9 before 3.0.

Affected product and versions

Product
Johnson Control victor
Affected versions
>= 2.9 < 3.0
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Johnson Control victor and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE
CWE-502