CVE-2026-28420

EUVD-2026-9088
Vim is an open source, command line text editor. Prior to version 9.2.0076, a heap-based buffer overflow WRITE and an out-of-bounds READ exist in Vim's terminal emulator when processing maximum combining characters from Unicode supplementary planes. Version 9.2.0076 fixes the issue.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.4 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
vimvim
𝑥
< 9.2.0076
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
vim
bookworm
vulnerable
bullseye
vulnerable
bullseye (security)
vulnerable
forky
2:9.2.0218-1
fixed
sid
2:9.2.0338-1
fixed
trixie
vulnerable
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://github.com/vim/vim/commit/bb6de2105b160e729c34063
https://github.com/vim/vim/releases/tag/v9.2.0076
https://github.com/vim/vim/security/advisories/GHSA-rvj2-jrf9-2phg
http://www.openwall.com/lists/oss-security/2026/02/27/9