Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-3968

CVE-2021-3968HIGH

vim vim/vim — Heap-based Buffer Overflow in vim/vim

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   R  U  H  H  H    8.0   .0223   82.5     —

AFFECTED
  Product  Versions       Fixed
  vim/vim  unspecified –  —

TIMELINE
  Nov 17  Reserved by @huntrdev
  Nov 19  Published (CNA: @huntrdev)
  Oct 8   EXPLOIT PUBLISHED — CVE-2021-3968 (vim/vim). Public exploit reference added.

CWE-122, CWE-787 · CNA: @huntrdev · CVSS v3.1 · 6 references · NVD status: Modified

Description

vim is vulnerable to Heap-based Buffer Overflow

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
November 17, 2021	Reserved	Reserved by @huntrdev
November 19, 2021	Published	Published (CNA: @huntrdev)
October 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2021-3968 (vim/vim). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
vim	vim/vim	—	unspecified	—

Weaknesses

CWE-122 · CWE-787

References (6)

http://www.openwall.com/lists/oss-security/2022/01/15/1 [Mailing List, Third Party Advisory]
https://github.com/vim/vim/commit/a062006b9de0b2947ab5fb376c6e67ef92a8cd69 [Patch, Third Party Advisory]
https://huntr.dev/bounties/00d62924-a7b4-4a61-ba29-acab2eaa1528 [Exploit, Issue Tracking, Patch, Third Party Advisory]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IH2LS2DXBTYOCWGAKFMBF3HTWWXPBEFL/
https://security.gentoo.org/glsa/202208-32 [Third Party Advisory]

Authoritative record: CVE-2021-3968 at cve.org

Vendors: vim

Weaknesses: CWE-122 · CWE-787

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-3968 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.