CVE-2021-4166: vim vim/vim

Affected products, as the CNA wrote them
Vendor	Product	Versions
vim	vim/vim	affected unspecified to before 8.2 custom

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.1	High	3.0	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H	CNA (@huntrdev)

CISA KEV Not listed.
EPSS 0.017, the 77th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 25 Dec 2021. New records show when each source confirmed them.

Sources

References from the CNA

huntr.dev/bounties/229df5dd-5507-44e9-832c-c70364bdf035 confirm
github.com/vim/vim/commit/6f98371532fcff911b462d51bc64f2ce8a6ae682
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2EY2VFBU3YGGWI5BW4XKT3F37MYGEQUD/ vendor-advisoryfedora
www.openwall.com/lists/oss-security/2022/01/15/1 mailing-listmlist
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3FH2J57GDA2WMBS6J56F6QQRA6BXQQFZ/ vendor-advisoryfedora
support.apple.com/kb/HT213183 confirm
seclists.org/fulldisclosure/2022/Mar/29 mailing-listfulldisc
support.apple.com/kb/HT213256 confirm
seclists.org/fulldisclosure/2022/May/35 mailing-listfulldisc
support.apple.com/kb/HT213343 confirm
seclists.org/fulldisclosure/2022/Jul/14 mailing-listfulldisc
security.gentoo.org/glsa/202208-32 vendor-advisorygentoo

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.