CVE-2021-3872: vim vim/vim

Heap-based Buffer Overflow in vim/vim

CVSS 7.8 HighEPSS 0.015 · 74th percentile

Published by the CVE Program (CNA: @huntrdev) at 19 Oct 2021, 12:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
vim	vim/vim	affected unspecified to before 8.2.3487 custom

Identifiers

CVE-2021-3872

CNA

@huntrdev

Weakness (CWE)

CWE-122

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
7.8	High	3.0	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CNA (@huntrdev)

CISA KEV Not listed.
EPSS 0.015, the 74th 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 19 Oct 2021. New records show when each source confirmed them.

Sources

References from the CNA

huntr.dev/bounties/c958013b-1c09-4939-92ca-92f50aa169e8 confirm
github.com/vim/vim/commit/826bfe4bbd7594188e3d74d2539d9707b1c6a14b
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S42L4Z4DTW4LHLQ4FJ33VEOXRCBE7WN4/ vendor-advisoryfedora
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K4JJBIH3OQSZRVTWKCJCDLGMFGQ5DOH/ vendor-advisoryfedora
lists.debian.org/debian-lts-announce/2022/03/msg00018.html mailing-listmlist
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.