High 7.3Published Nov 19, 2021

CVE-2021-3973Heap-based Buffer Overflow in vim/vim

Updated under an hour ago (Oct 26, 2026, 11:50 PM ET)

Does this affect you?

It affects vim/vim and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for vim/vim

Exploited in the last 30 days

vim is vulnerable to Heap-based Buffer Overflow

CVSS: 7.3 HIGH (v3.0, CNA)CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H
Weakness (CWE): CWE-122
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: @huntrdev
NVD analysis: Modified
Record last updated: Oct 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

vim vim/vim vim:vim (from the name)	from unspecified before 8.2.3611	CNA record
vim vim vim:vim	before 8.2.3611	NVD
fedoraproject fedora fedoraproject:fedora	34; 35	NVD
debian debian_linux debian:debian_linux	9.0	NVD

References

References

https://huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052e	x-refsource-confirm
https://github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847	x-refsource-misc
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IH2LS2DXBTYOCWGAKFMBF3HTWWXPBEFL/	vendor-advisory, x-refsource-fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/	vendor-advisory, x-refsource-fedora
http://www.openwall.com/lists/oss-security/2022/01/15/1	mailing-list, x-refsource-mlist
https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html	mailing-list, x-refsource-mlist
https://security.gentoo.org/glsa/202208-32	vendor-advisory, x-refsource-gentoo

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.