CVE-2026-28420

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.

Weakness classification

• CWE-122: Heap-based Buffer Overflow
• CWE-125: Out-of-bounds Read

Primary references

• security-advisories@github.com — Patch
• security-advisories@github.com — Product
• security-advisories@github.com — Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Patch, Third Party Advisory