CVE-2021-3973
Heap-based Buffer Overflow in vim/vim
At a glance
- Severity
- HIGH 7.3
- EPSS
- EPSS 1.79 % · percentile 78 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- @huntrdev
- NVD status
- Modified
Description
vim is vulnerable to Heap-based Buffer Overflow
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 7.3 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H | @huntrdev |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | HIGH 7.3 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H | NVD · security@huntr.dev (Secondary) |
| CVSS 2.0 | HIGH 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2021-27178
- GCVE · GCVE-0-2021-3973
CERT-FR advisories
- CERTFR-2025-AVI-0693 — Multiples vulnérabilités dans VMware Tanzu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0585 — Multiples vulnérabilités dans VMware Tanzu · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:*< 8.2.3611cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| vim · vim/vim | affected unspecified < 8.2.3611 |
References
- https://huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052e
- https://github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IH2LS2DXBTYOCWGAKFMBF3HTWWXPBEFL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/
- http://www.openwall.com/lists/oss-security/2022/01/15/1
- https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html
- https://security.gentoo.org/glsa/202208-32
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |