CVE-2026-28421 — Improper Input Validation in VIM

CWE-20 — Improper Input ValidationCWE-122 — Heap-based Buffer OverflowCWE-120 — Classic Buffer Overflow10 documents9 sources
Severity
7.8HIGHNVD
OSV6.6
EPSS
0.0%
top 98.78%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
VIMDebian VIMMsrc Azl3 VIM 9.1.1616-1 ON Azure Linux 3.0+1 more
Timeline
PublishedFeb 27
Latest updateApr 16

Description

Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow and a segmentation fault (SEGV) exist in Vim's swap file recovery logic. Both are caused by unvalidated fields read from crafted pointer blocks within a swap file. Version 9.2.0077 fixes the issue.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages6 packages

▶NVDvim/vim< 9.2.0077
▶debiandebian/vim< vim 2:9.2.0119-1 (forky)
▶Debianvim/vim< 2:9.2.0119-1
▶Ubuntuvim/vim< 2:8.2.3995-1ubuntu2.26+6

Patches

Patch: github.com ↗Patch: github.com ↗Patch: www.openwall.com ↗

🔴Vulnerability Details

3
VulDB
vim up to 9.2.0076 unvalidated memory corruption (GHSA-r2gw-2x48-jj5p / EUVD-2026-9089)↗2026-04-16
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OSV
vim vulnerabilities↗2026-03-16
▶
OSV
CVE-2026-28421: Vim is an open source, command line text editor↗2026-02-27
▶

📋Vendor Advisories

4
Ubuntu
Vim vulnerabilities↗2026-03-16
▶
Red Hat
vim: Vim: Denial of service and information disclosure via crafted swap file↗2026-02-27
▶
Microsoft
Vim has a heap-buffer-overflow and a segmentation fault↗2026-02-10
▶
Debian
CVE-2026-28421: vim - Vim is an open source, command line text editor. Versions prior to 9.2.0077 have...↗2026
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-28421 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶

💬Community

1
Bugzilla
CVE-2026-28421 vim: Vim: Denial of service and information disclosure via crafted swap file↗2026-02-27
▶
CVE-2026-28421 — Improper Input Validation in VIM | cvebase