What is CVE-2023-0051?

CVE-2023-0051 is a high-severity vulnerability in Vim, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2023-01-04.

How severe is CVE-2023-0051?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-0051 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Vim

CVE-2023-0051

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1144.

Vulnerability class: Buffer Overflow

Published 2023-01-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (41.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Vim
Vim Vim/vim — versions unspecified

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

huntr.dev/bounties/1c8686db-baa6-42dc-ba45-aed322802de9 (Exploit, Third Party Advisory)
github.com/vim/vim/commit/c32949b0779106ed5710ae3bffc5053e49083ab4 (Patch, Third Party Advisory)
support.apple.com/kb/HT213670
seclists.org/fulldisclosure/2023/Mar/17 (mailing-list)
security.gentoo.org/glsa/202305-16 (vendor-advisory)

Frequently asked questions

What is CVE-2023-0051?: CVE-2023-0051 is a high-severity vulnerability in Vim, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2023-01-04.
How severe is CVE-2023-0051?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-0051 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.