Heap-based Buffer Overflow Affecting vim package, versions <2:9.2.0119-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.18% (8th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-VIM-15364974
  • published28 Feb 2026
  • disclosed27 Feb 2026

Introduced: 27 Feb 2026

CVE-2026-28420  (opens in a new tab)
CWE-122  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Debian:unstable vim to version 2:9.2.0119-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream vim package and not the vim package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1