What’s Vulnerable › Vulnerabilities

CVE-2020-9049: victor Web Client and C•CURE Web Client JSON Web Token (JWT) Vulnerability

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-19 · updated 2026-06-17
• Weakness: CWE-285

Description

A vulnerability in specified versions of American Dynamics victor Web Client and Software House C•CURE Web Client could allow an unauthenticated attacker on the network to create and sign their own JSON Web Token and use it to execute an HTTP API Method without the need for valid authentication/authorization. Under certain circumstances, this could be used by an attacker to impact system availability by conducting a Denial of Service attack.

Affected products

• Johnsoncontrols C-Cure Web: through 2.90
• Johnson Controls victor Web: through 5.6

References

• https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01
• https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01
• https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01
• https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01
• https://www.johnsoncontrols.com/cyber-solutions/security-advisories
• https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01
• https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01
• https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01
• https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01
• https://www.johnsoncontrols.com/cyber-solutions/security-advisories

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