What’s Vulnerable › Vulnerabilities

CVE-2022-1621: Heap buffer overflow in vim_strncpy find_word in vim/vim

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-05-10 · updated 2026-06-17
• Weakness: CWE-122

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

Affected products

• Apple macOS: before 13.0 — fixed in 13.0
• Debian Linux: 9.0, 10.0
• Fedoraproject Fedora: 34, 35
• vim/vim: before 8.2.4919 — fixed in 8.2.4919

How to fix

Upgrade to a fixed version: Apple macOS 13.0; vim/vim 8.2.4919. Check the vendor advisory for mitigations.

References

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

Get alerted when CVE-2022-1621 or the next vulnerability affects your stack