CVE-2025-61984

3.6 LOW
Published: October 06, 2025 Modified: November 11, 2025
View on NVD

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.)

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://marc.info/?l=openssh-unix-dev&m=175974522032149&w=2
Source: cve@mitre.org
https://www.openssh.com/releasenotes.html#10.1p1
Source: cve@mitre.org
https://www.openwall.com/lists/oss-security/2025/10/06/1
Source: cve@mitre.org
http://www.openwall.com/lists/oss-security/2025/10/07/1
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2025/10/12/1
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.vicarius.io/vsociety/posts/cve-2025-61984-detection-script-remote-code-execution-vulnerability-affecting-openssh
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.vicarius.io/vsociety/posts/cve-2025-61984-mitigation-script-remote-code-execution-vulnerability-affecting-openssh
Source: af854a3a-2127-422b-91ae-364da2661108
https://dgl.cx/2025/10/bash-a-newline-ssh-proxycommand-cve-2025-61984
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

8 reference(s) from NVD

Quick Stats

CVSS v3 Score
3.6 / 10.0
EPSS (Exploit Probability)
0.0%
0th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-159

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