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Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package vim  (opens in a new tab)

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EPSS
0.3% (22nd percentile)

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  • Snyk IDSNYK-RHEL10-VIM-17330178
  • published13 Jun 2026
  • disclosed11 Jun 2026
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Introduced: 11 Jun 2026

CVE-2026-52859  (opens in a new tab)
CWE-787  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream vim package and not the vim package as distributed by RHEL.

Vim is an open source, command line text editor. Prior to version 9.2.0565, the update_snapshot() function in src/terminal.c copies the visible terminal screen into the scrollback buffer when a snapshot is taken. For each screen cell it walks the cell's chars[] array with no upper bound, stopping only when it encounters a NUL terminator. When a cell legitimately fills all VTERM_MAX_CHARS_PER_CELL (6) slots — a base character plus five combining marks — the bundled libvterm returns the array without a terminating NUL, so the loop reads past the fixed six-element array and appends the out-of-bounds values to a buffer reserved for only six characters. A program whose output is rendered inside a :terminal window can trigger this with a short byte sequence and no Vim scripting, leading to a crash. This issue has been patched in version 9.2.0565.