Privilege escalation in Johnson Controls Metasys
CVE-2021-27657
Successful exploitation of this vulnerability could give an authenticated Metasys user an unintended level of access to the server file system, allowing them to access or modify system files by sending specifically crafted web messages to the Metasys system. This issue affects: Johnson Controls Metasys version 11.0 and prior versions.
Vulnerability class: Privilege Escalation
EPSS: 0.012 (66.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Johnson Controls Metasys — versions 11.0
- Johnsoncontrols Metasys
Weakness classification (CWE)
References
- productsecurity@jci.com (x_refsource_CONFIRM, Vendor Advisory)
- productsecurity@jci.com (US Government Resource, Third Party Advisory, x_refsource_CERT, third-party-advisory)
- productsecurity@jci.com (US Government Resource, Third Party Advisory, x_refsource_CERT, third-party-advisory)
Frequently asked questions
- What is CVE-2021-27657?
- CVE-2021-27657 is a high-severity vulnerability in Johnson Controls Metasys, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2021-06-04.
- How severe is CVE-2021-27657?
- High severity. CVSS v3 base score is 8.8 out of 10.