CVE-2021-3770: vim vim/vim

Affected products, as the CNA wrote them
Vendor	Product	Versions
vim	vim/vim	affected unspecified to before 8.2.3403 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
8.6	High	3.0	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H	CNA (@huntrdev)

CISA KEV Not listed.
EPSS 0.0073, the 54th 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 6 Sept 2021. New records show when each source confirmed them.

Sources

CVE List: CVE-2021-3770
NVD: CVE-2021-3770

References from the CNA

huntr.dev/bounties/016ad2f2-07c1-4d14-a8ce-6eed10729365
github.com/vim/vim/commit/b7081e135a16091c93f6f5f7525a5c58fb7ca9f9
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J2CJLY3CF55I2ULG2X4ENXLSXAXYW5J4/ vendor-advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X4FFQARG3LGREPDZRI4C7ERQL3RJKEWQ/ vendor-advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZFNTMVZCN4TRTTCAXRLVQ7H2P7FYAIZQ/ vendor-advisory
www.openwall.com/lists/oss-security/2021/10/01/1 mailing-list
security.gentoo.org/glsa/202208-32 vendor-advisory
security.netapp.com/advisory/ntap-20221124-0003/

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.