CVE-2026-73075
Vim is an open source, command line text editor. From 9.2.0469 until 9.2.0843, popup_mark_opacity_zindex() in src/popupwin.c can use a negative w_winrow for a text-property-anchored popup with clipwindow and opacity, indexing before the screen array instead of accounting for w_popup_topoff and causing an out-of-bounds read and conditional write. This issue is fixed in version 9.2.0843.
CSIRTS triage
- What
- Out-of-bounds memory access in popup opacity handling can cause crash.
- Who is affected
- Systems running Vim with popup window features.
- Urgency
- Unknown severity; not exploited; memory safety defect in UI feature.
- Action
- Update Vim to version with bounds checking fix for popup opacity.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-73075
Get an email if CVE-2026-73075 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Advisory coverage (2)
- unknownCVE-2026-73075: Vim is an open source, command line text editor. From 9.2.0469 until 9.2.0843, popup_mark_opac…nvd · 2026-08-11
- unknownCVE-2026-73075: Vim: Out-of-bounds Access in Popup Opacity Handlingmsrc · 2026-08-11
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-73075)