CVE-2021-3973

vim is vulnerable to Heap-based Buffer Overflow

CVSS 3.1

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

EPSS

1.8% chance of exploitation in the next 30 days; higher than 78% of CVEs (scores of 2026-10-25)

CWEs

CWE-122, CWE-787

Published

2021-11-19

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• fedoraproject:fedora
• vim:vim

References

• http://www.openwall.com/lists/oss-security/2022/01/15/1
• https://github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847
• https://huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052e
• https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/

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