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terminal2Shell is a critical flaw present in every operating system since 1971 allows anyone who opens a terminal to obtain a fully interactive shell. Instantly. With no authentication beyond the one (terminal2shell.com)

submitted 5 days ago by Infrapink@thebrainbin.org to c/programmerhumor@lemmy.ml

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Terminal2Shell is a design-level vulnerability in terminal emulators. When a terminal is launched, it immediately spawns a shell process and connects it directly to the user's keyboard. From there, the attacker can issue arbitrary commands with the full privileges of the logged-in user.

Researchers have confirmed that the shell will execute any command typed into it, including commands that delete files, install software, and modify system configuration. In some cases, the shell has been observed executing commands the user typed themselves.

Product	Vector	Status
macOS	Terminal.app, iTerm2, Ghostty, Warp	VULNERABLE
Linux	gnome-terminal, Konsole, xterm, Ctrl+Alt+F2	VULNERABLE
Windows	cmd.exe, PowerShell, Windows Terminal, WSL	VULNERABLE
FreeBSD / OpenBSD	Literally the default experience	VULNERABLE
DEC VT100 (1978)	Physical serial cable	VULNERABLE
Your router	SSH, telnet, the little console port on the back	VULNERABLE
VS Code	Ctrl+` (one keystroke!)	VULNERABLE
Microsoft Paint	None known	Not affected

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[-] Guiorgy@lemmy.ml 2 points 4 days ago

For what it's worth I've been on Lemmy for barely over a month, so I'm still pretty new to this. I was not at all expecting to be talking to people from Mastodon or mbin here 🤔

My understanding was that federation allowed many independent Lemmy instances to interact, but nit that it even included other platforms. Looks like I'll have to do some reading into this whole thing.

Thanks for trying to explain!

this post was submitted on 09 Nov 2026

166 points (97.2% liked)

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