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.

CVSS 4.0

4.6CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

3.9CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

EPSS

0.09% chance of exploitation in the next 30 days; higher than 0% of CVEs (scores of 2026-10-25)

CWEs

CWE-124, CWE-125

Published

2026-08-11

Modified

2026-10-06

Record from

the NVD, synced 2026-10-19

Affected

• vim:vim

References

• https://github.com/vim/vim/security/advisories/GHSA-pmvp-6rcj-98p4
• https://github.com/vim/vim/security/advisories/GHSA-pmvp-6rcj-98p4
• https://github.com/vim/vim/security/advisories/GHSA-pmvp-6rcj-98p4
• https://github.com/vim/vim/security/advisories/GHSA-pmvp-6rcj-98p4

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