CVE-2021-20286

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

1.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 66.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

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

2021-03-15 17:38Z5 YR AGO

Last updated

2024-08-03 17:37Z2 YR AGO

Reserved

2020-12-17

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-617Reachable AssertionBase

Data version

5.1

Document digest

4a2374a6efb3ccbecd5636d4780c6658a5631a4867121af56f838b4475a51660

• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1934727x_refsource_MISC
• gitlab.comhttps://gitlab.com/nbdkit/libnbd/-/commit/fb4440de9cc76e9c14bd3ddf3333e78621f40ad0x_refsource_MISC