High severity · published Jul 23, 2026
CVE-2026-21655
C-CURE 9000 and Victor application server - Deserialization of Untrusted Data
8.7
CVSS
0.5%
EPSS
No
On KEV
Description
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
C9
CCure 9000 · Johnson Controls
before 3.2 · source: vendor
VA
VI
victor · Johnson Control
before 8.0 · source: vendor
In the news
VulnerabilityCritical
Johnson Controls C-CURE 9000 and Victor application server
View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker with network access to achieve remote code execution. The following versions of Johnson Controls C-CURE 9000 and Victor application server are affected: C-CURE 9000 and victor <=v2.90_v3.0  victor Web <=v7.1  CVSS Vendor Equipment Vulnerabilities v3 9.6 Johnson Controls Johnson Controls C-CURE 9000 and Victor application server Server-Side Request Forgery (SSRF), Execution with Unnecessary Privileges Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Ireland Vulnerabilities Expand All + CVE-2026-21655 Under certain circumstances, successful exploitation of this vulnerability could allow an unauthenticated attacker on the adjacent network to achieve arbitrary code execution on the C-CURE 9000 or victor application server, as well as connected clients (e.g., workstations of physical security personnel). Such an attack could impact physical security controls. View CVE Details Affected Products Johnson Controls C-CURE 9000 and Victor application server Vendor: Johnson Controls Product Version: Johnson Controls C-CURE 9000 and victor: <=v2.90_v3.0 Product Status: known_affected Remediations Mitigation Johnson Controls recommends the following defensive measures to...
Jul 23, 2026·CISA Advisories