Vim: Out-of-bounds Access in Popup Opacity Handling

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CVE-2026-73075

A flaw was found in Vim, an open-source text editor. This vulnerability involves an out-of-bounds memory access within the popup opacity handling feature. A local attacker could exploit this by using specially crafted Vim script, leading to an out-of-bounds read and a limited out-of-bounds write...

CVE-2026-73075

CVE-2026-73075 (Vim) affects Vim versions 9.2.0469 through 9.2.0843. The issue occurs in popupwin.c: popup_mark_opacity_zindex() can use a negative w_winrow for a text-property-anchored popup with clipwindow and opacity, indexing before the screen array and leading to an out-of-bounds read and a ...

CVE-2026-73075 Vim: Out-of-bounds Access in Popup Opacity Handling

Vim is an open source, command line text editor. From 9.2.0469 until 9.2.0843, popupmarkopacityzindex in src/popupwin.c can use a negative wwinrow for a text-property-anchored popup with clipwindow and opacity, indexing before the screen array instead of accounting for wpopuptopoff and causing an...

CVE-2026-73075 Vim: Out-of-bounds Access in Popup Opacity Handling

Vim is an open source, command line text editor. From 9.2.0469 until 9.2.0843, popupmarkopacityzindex in src/popupwin.c can use a negative wwinrow for a text-property-anchored popup with clipwindow and opacity, indexing before the screen array instead of accounting for wpopuptopoff and causing an...

CVE-2026-73075 Vim: Out-of-bounds Access in Popup Opacity Handling

Vim is an open source, command line text editor. From 9.2.0469 until 9.2.0843, popupmarkopacityzindex in src/popupwin.c can use a negative wwinrow for a text-property-anchored popup with clipwindow and opacity, indexing before the screen array instead of accounting for wpopuptopoff and causing an...