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 — CVE-2025-61984

Summary

Advisory CVE-2025-61984. ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially… Vendor: Microsoft. Source: MSRC. Threat: low. CVSS 3.6. See the official…

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

Read the official source

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