CVE-2025-61985: ssh in OpenSSH before 10.1 allows the '\0' character in an ssh:// URI, potentially leading to code execution when a ProxyCommand is used.

Overview

Severity
Low (CVSS 3.6)
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Exploit Status
Not Exploited
Patch Tuesday
2025-Oct
Released
2025-10-08
EPSS Score
0.02% (percentile: 3.7%)

FAQ

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability? One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.

Affected Products (4)

Mariner

  • azl3 openssh 9.8p1-4 on Azure Linux 3.0

Open Source Software

  • azl3 openssh 9.8p1-5 on Azure Linux 3.0
  • cbl2 openssh 8.9p1-8 on CBL Mariner 2.0
  • cbl2 openssh 8.9p1-9 on CBL Mariner 2.0

Revision History

  • 2025-10-08: Information published.