CVE-2021-27449

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

3.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 87.7% 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

2021-12-21 17:55Z4 YR AGO

Last updated

2024-09-17 01:51Z2 YR AGO

Reserved

2021-02-19

Assigning CNA

icscert

Record state

PUBLISHED

Severity

Critical (CVSS 9.9)

CNA CVSS vector

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

Weaknesses

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class

Data version

5.1

Document digest

65350689ae111b5afbaa7fdca542e6c6de0ace5a87457a574a19c37d26b7d9b2

• us-cert.cisa.govhttps://us-cert.cisa.gov/ics/advisories/icsa-21-147-03x_refsource_CONFIRM