CVE-2021-3973: vim vim/vim

Heap-based Buffer Overflow in vim/vim

CVSS 7.3 HighEPSS 0.018 · 78th percentile

Published by the CVE Program (CNA: @huntrdev) at 19 Nov 2021, 11:35 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 8.2.3611 custom

Identifiers

CVE-2021-3973

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

CISA KEV Not listed.
EPSS 0.018, the 78th 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 Nov 2021. New records show when each source confirmed them.

Sources

References from the CNA

huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052e confirm
github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IH2LS2DXBTYOCWGAKFMBF3HTWWXPBEFL/ vendor-advisoryfedora
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/ vendor-advisoryfedora
www.openwall.com/lists/oss-security/2022/01/15/1 mailing-listmlist
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.