CVE-2021-20159

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

3.10% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 87.6% 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

2021-12-30 21:31Z4 YR AGO

Last updated

2024-08-03 17:30Z2 YR AGO

Reserved

2020-12-17

Assigning CNA

tenable

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.1

Document digest

a01340f7d7a2c02f9a37ead2bdeed0af57ffa4deeb8cb3deaaa1b791064f3e9b

• www.tenable.comhttps://www.tenable.com/security/research/tra-2021-54x_refsource_MISC