CVE-2026-28420

Summary

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.

Affected Software

Weaknesses

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

ADP Enrichment

CVE Program Container

Additional References

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

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/vim/vim/security/advisories/GHSA-rvj2-jrf9-2phg
• https://github.com/vim/vim/commit/bb6de2105b160e729c34063
• https://github.com/vim/vim/releases/tag/v9.2.0076

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