CVE-2021-45444

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

1.98% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 80.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Moderate. 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

2022-02-13 05:32Z4 YR AGO

Last updated

2024-08-04 04:39Z2 YR AGO

Reserved

2021-12-21

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

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

Data version

5.1

Document digest

55e333e1c2b9e1d299009045f982ec58b4fd7da89c8e4fc04af643463244eb98

• zsh.sourceforge.iohttps://zsh.sourceforge.io/releases.htmlx_refsource_MISC
• vuln.ryotak.mehttps://vuln.ryotak.me/advisories/63x_refsource_MISC
• lists.fedoraproject.orgFEDORA-2022-adf0c6d196https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/vendor-advisoryx_refsource_FEDORA
• www.debian.orgDSA-5078https://www.debian.org/security/2022/dsa-5078vendor-advisoryx_refsource_DEBIAN
• lists.debian.org[debian-lts-announce] 20220218 [SECURITY] [DLA 2926-1] zsh security updatehttps://lists.debian.org/debian-lts-announce/2022/02/msg00020.htmlmailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2022-0a06987c3chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/vendor-advisoryx_refsource_FEDORA
• support.apple.comhttps://support.apple.com/kb/HT213257x_refsource_CONFIRM
• support.apple.comhttps://support.apple.com/kb/HT213256x_refsource_CONFIRM
• support.apple.comhttps://support.apple.com/kb/HT213255x_refsource_CONFIRM
• seclists.org20220516 APPLE-SA-2022-05-16-4 Security Update 2022-004 Catalinahttp://seclists.org/fulldisclosure/2022/May/33mailing-listx_refsource_FULLDISC
• seclists.org20220516 APPLE-SA-2022-05-16-3 macOS Big Sur 11.6.6http://seclists.org/fulldisclosure/2022/May/35mailing-listx_refsource_FULLDISC
• seclists.org20220516 APPLE-SA-2022-05-16-2 macOS Monterey 12.4http://seclists.org/fulldisclosure/2022/May/38mailing-listx_refsource_FULLDISC