LOW 3.6 Microsoft
CVE-2025-61984
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.)
Microsoft Security Update 2025-Oct: 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.)
Affected Products
- azl3 openssh 9.8p1-4 on Azure Linux 3.0
- cbl2 openssh 8.9p1-8 on CBL Mariner 2.0
- azl3 openssh 9.8p1-5 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-61984
- https://nvd.nist.gov/vuln/detail/CVE-2025-61984
This low severity vulnerability with a CVSS score of 3.6 was published on 2025-10-14 via Microsoft. Affected: azl3 openssh 9.8p1-4 on Azure Linux 3.0, cbl2 openssh 8.9p1-8 on CBL Mariner 2.0, azl3 openssh 9.8p1-5 on Azure Linux 3.0.
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