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.
Published 2021-06-04 15:15:08
Updated 2021-12-02 13:55:36
View at NVD,   CVE.org

Products affected by CVE-2021-27657

Exploit prediction scoring system (EPSS) score for CVE-2021-27657

0.28%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 68 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-27657

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.5
MEDIUM AV:N/AC:L/Au:S/C:P/I:P/A:P
8.0
6.4
NIST
8.8
HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.8
5.9
NIST
8.8
HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.8
5.9
Johnson Controls

CWE ids for CVE-2021-27657

  • The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
    Assigned by:
    • nvd@nist.gov (Primary)
    • productsecurity@jci.com (Secondary)

References for CVE-2021-27657

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