CVE-2026-28420

MEDIUM

Vim < 9.2.0076 - Heap-based Buffer Overflow in Terminal Emulator

Title source: llm

Description

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.

References (4)

Core 4

Core References

Mailing List

http://www.openwall.com/lists/oss-security/2026/02/27/9

Vendor Advisory x_refsource_confirm

https://github.com/vim/vim/security/advisories/GHSA-rvj2-jrf9-2phg

Patch x_refsource_misc

https://github.com/vim/vim/commit/bb6de2105b160e729c34063

View Patch ZIP pw:eip

Release Notes x_refsource_misc

https://github.com/vim/vim/releases/tag/v9.2.0076

Scores

CVSS v3 4.4

EPSS 0.0018

EPSS Percentile 7.4%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-122 CWE-125

Status published

Products (1)

vim/vim < 9.2.0076

Published Feb 27, 2026

Tracked Since Feb 28, 2026