Description
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.
Affected products
vim: vim
References4
- github.com/vim/vim/security/advisories/GHSA-pmvp-6rcj-98p4 PatchVendor Advisory
- github.com/vim/vim/security/advisories/GHSA-pmvp-6rcj-98p4 PatchVendor Advisory
- github.com/vim/vim/security/advisories/GHSA-pmvp-6rcj-98p4 PatchVendor Advisory
- github.com/vim/vim/security/advisories/GHSA-pmvp-6rcj-98p4 PatchVendor Advisory
Metrics
- CVSS 3.1
-
3.9
LOW
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - CVSS 4.0
-
4.6
MEDIUM
Score source: CNA
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 1 · as of 12 November 2026
- CWE
- CWE-124CWE-125
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