CVE-2021-39364

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

1.05% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 61.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2022-02-24 21:13Z4 YR AGO

Last updated

2024-08-04 02:06Z2 YR AGO

Reserved

2021-08-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-294Authentication Bypass by Capture-replayBase

Data version

5.1

Document digest

6f070919018f89e61cdbade6f5a5b9f6f55a46c8824ec441e6c2893a467a6525

• www.honeywell.comhttps://www.honeywell.com/us/en/product-securityx_refsource_MISC
• buildings.honeywell.comhttps://buildings.honeywell.com/us/en/brands/our-brands/security/support-and-resources/product-resources/eol-and-security-noticesx_refsource_MISC
• buildings.honeywell.comhttps://buildings.honeywell.com/content/dam/hbtbt/en/documents/downloads/Security_Notification_SN_2022-01-26-02_CVE-2021-39364_Video_Replay_HBW2PER1.pdfx_refsource_CONFIRM