CVE-2021-27662

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.84% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 57.4% of scored records. A rank, not a probability.

NVD base score

8.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-09-15 12:04Z5 YR AGO

Last updated

2024-09-17 00:31Z2 YR AGO

Reserved

2021-02-24

Assigning CNA

jci

Record state

PUBLISHED

Severity

High (CVSS 8.6)

CNA CVSS vector

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

Weaknesses

• CWE-294Authentication Bypass by Capture-replayBase

Data version

5.1

Document digest

b63a97d5959000e87b962c18f41cb9948ae3e31d3c994d2e32f30551f73dbee9

• www.johnsoncontrols.comhttps://www.johnsoncontrols.com/cyber-solutions/security-advisoriesx_refsource_CONFIRM
• us-cert.govICS-CERT Advisoryhttps://us-cert.gov/ics/advisoriesthird-party-advisoryx_refsource_CERT