CVE-2026-54758 Notepad++: Stack Buffer Overflow in expandNppEnvironmentStrs

Notepad++ is a free and open-source source code editor. Prior to 8.9.7, the expandNppEnvironmentStrs function in PowerEditor/src/WinControls/StaticDialog/RunDlg/RunDlg.cpp copies a Notepad++ variable name between $ and into the fixed-size wchart strMAXPATH stack buffer without bounding the m loop...

CVE-2026-54758

creationtimestamp| type| source ---|---|--- 2026-07-15 02:28:34+00:00| seen| https://bsky.app/profile/securityonline.bsky.social/post/3mqnoeb25ov2m 2026-07-16 23:04:30+00:00| seen| https://bsky.app/profile/securitylab-jp.bsky.social/post/3mqsdv3qvdc2r 2026-07-17 16:15:07+00:00| seen|...