CVE-2026-28420CWE-122CWE-125

Vim has Heap-based Buffer Overflow and OOB Read in :terminal

Medium · published February 27, 2026

CVSS v3.1
4.4
EPSS
0%
Percentile
8.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.4 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00188 · 8.0th percentile
Weaknesses
CWE-122 · Heap-based Buffer Overflow; CWE-125 · Out-of-bounds Read
Published
2026-02-27T22:04Z
EPSS history
Timeline
  • 27 FEB 22:04Z
    Vim has Heap-based Buffer Overflow and OOB Read in :terminal
    cvelistv5