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18impact

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

vim · CVE-2026-28420
0 news outlets0 CERTs and agencies0 researchers

What is it?

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.

Evidence

No coverage recorded yet.

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
4.4
EPSS
0.2%
First seen
7 d ago
Status
corroborated

All vim vulnerabilities