CVE-2025-61984
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 3.6epss 0.3%
exploitation probability
0.3%top 80% of all CVEs
observed exploitation
nono source reports it
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.)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Affected products
OpenBSD · OpenSSHReferences
https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://dgl.cx/2025/10/bash-a-newline-ssh-proxycommand-cve-2025-61984https://marc.info/?l=openssh-unix-dev&m=175974522032149&w=2https://www.openssh.com/releasenotes.html#10.1p1https://www.openwall.com/lists/oss-security/2025/10/06/1https://www.vicarius.io/vsociety/posts/cve-2025-61984-detection-script-remote-code-execution-vulnerability-affecting-opensshhttps://www.vicarius.io/vsociety/posts/cve-2025-61984-mitigation-script-remote-code-execution-vulnerability-affecting-opensshhttp://www.openwall.com/lists/oss-security/2025/10/07/1http://www.openwall.com/lists/oss-security/2025/10/12/1