CVE-2025-61984

Low

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.)

SeverityLow
CVSS3.6
Exploit probability—
ProductOpenSSH
PublishedOct 6, 2025
First seenOct 6, 2025
Weakness typeCWE-159CWE-159

How to fix

Update
  • OpenBSD OpenSSH10.1 or later

Affected products

ProductAffected versionsFixed in
OpenBSD OpenSSHv < 10.110.1

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