CVE-2021-42072

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

1.65% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 74.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/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

2021-11-08 03:44Z4 YR AGO

Last updated

2024-08-04 03:22Z2 YR AGO

Reserved

2021-10-07

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-287Improper AuthenticationClass

Data version

5.1

Document digest

88016d164cda27ce5960347237e7a2b5d11ff7f66558133b84bb60119b82dc46

• www.openwall.com[oss-security] 20211102 Barrier "software KVM switch" multiple remote security issueshttp://www.openwall.com/lists/oss-security/2021/11/02/4mailing-listx_refsource_MLIST
• github.comhttps://github.com/debauchee/barrier/releases/tag/v2.4.0x_refsource_MISC
• lists.fedoraproject.orgFEDORA-2022-3dc519f073https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XMU3STOKHPEZSC54MZ42YBFFC2R3BU2Q/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2022-09c1a5bab8https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CIEVNCFEFO7L3NTM4VUZB3WKYYCBTFCI/vendor-advisoryx_refsource_FEDORA