The autocmd feature in window.c in Vim before 8.1.2136 accesses freed memory.
https://github.com/vim/vim/commit/ec66c41d84e574baf8009dbc0bd088d2bc5b2421
https://github.com/vim/vim/compare/v8.1.2135...v8.1.2136
Source: MITRE
Published: 2019-12-30
Updated: 2020-10-20
Type: CWE-416
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH