CVE-2020-9049

Name: CVE-2020-9049
Creator: NVD / NIST
Published: 2020-11-19T16:15:11.173+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2020-9049 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.53%

40.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Johnsoncontrols	C-Cure Web	<= 2.90
Johnsoncontrols	Victor Web	<= 5.6

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01Patch, Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01Patch, Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01Patch, Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01Patch, Third Party Advisory, US Government Resource
https://www.johnsoncontrols.com/cyber-solutions/security-advisoriesVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01Patch, Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01Patch, Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01Patch, Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01Patch, Third Party Advisory, US Government Resource
https://www.johnsoncontrols.com/cyber-solutions/security-advisoriesVendor Advisory

Timeline

Published: Nov 19, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9049?

How severe is CVE-2020-9049?

CVE-2020-9049 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9049?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-9049?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST