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CVE-2023-4738

23
FAUCET Score

CVE-2023-4738 is a high-severity heap-based buffer overflow vulnerability affecting Vim prior to version 9.0.1848, specifically impacting Apple macOS and Vim installations on macOS. With a CVSS score of 7.8, successful exploitation requires user interaction (UI:R) and local access (AV:L), but could lead to complete compromise of confidentiality, integrity, and availability (C:H/I:H/A:H). Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.0.1848CPE match
cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:*
14.0CPE matchmatch criteria
cpe:2.3:o:apple:macos:14.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
45.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 44th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 18317-16823Fixed in: 9.0.1897-1
microsoftpatch availablevia msrc
Product: cbl2 vim 9.0.1897-1 on CBL Mariner 2.0Fixed in: 9.0.1897-1
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: vim
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: vim

Vendor Advisories (2)

microsoft2023-Sep/CVE-2023-4738Important

Heap-based Buffer Overflow in vim/vim

Sep 12, 2023
redhatCVE-2023-4738Low

vim: heap-buffer-overflow in vim_regsub_both in vim/vim

Sep 2, 2023

References

lists.debian.org / debian-lts-announce/2025/03/msg00023.html
seclists.org / fulldisclosure/2023/Oct/24
Mailing ListThird Party Advisory
github.com / vim/vim/commit/ced2c7394aafdc90fb7845e09b3a3fee23d48cb1
Patch
huntr.dev / bounties/9fc7dced-a7bb-4479-9718-f956df20f612
ExploitPatchThird Party Advisory
support.apple.com / kb/HT213984
Release NotesThird Party Advisory