CVE-2021-3973

Heap-based Buffer Overflow in vim/vim

vim is vulnerable to Heap-based Buffer Overflow

Affected

vim · vim/vim

CVSS v3.1 NVD

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.0 HUNTR

7.3 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H

CVSS v2.0 NVD

9.3 HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS

1.79% chance of exploitation in the next 30 days, 78th percentile

Published

2021-11-19

Updated

2026-10-08

Proof-of-concept exploits (1)

• https://huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052e

Security advisories

• http://www.openwall.com/lists/oss-security/2022/01/15/1
• vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847
• https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html
• https://security.gentoo.org/glsa/202208-32

References

• CVE Record
• NVD entry