Heap-based Buffer Overflow Affecting vim-filesystem package, versions <2:8.2.2637-26.0.1.el9_8.21


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.19% (8th percentile)

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  • Snyk IDSNYK-ORACLE9-VIMFILESYSTEM-19687806
  • published11 Sept 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 Oracle:9 vim-filesystem to version 2:8.2.2637-26.0.1.el9_8.21 or higher.
This issue was patched in ELSA-2026-66366-0.

NVD Description

Note: Versions mentioned in the description apply only to the upstream vim-filesystem package and not the vim-filesystem package as distributed by Oracle. See How to fix? for Oracle:9 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