CVE-2025-61984

Name	CVE-2025-61984
Description	ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code execution when a ProxyCommand is used. The untrusted sources are the command line and %-sequence expansion of a configuration file. (A configuration file that provides a complete literal username is not categorized as an untrusted source.)
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
openssh (PTS)	bullseye	1:8.4p1-5+deb11u3	vulnerable
	bullseye (security)	1:8.4p1-5+deb11u5	vulnerable
	bookworm	1:9.2p1-2+deb12u7	vulnerable
	bookworm (security)	1:9.2p1-2+deb12u5	vulnerable
	trixie	1:10.0p1-7	vulnerable
	forky, sid	1:10.0p1-8	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
openssh	source	(unstable)	(unfixed)

https://www.openwall.com/lists/oss-security/2025/10/06/1