# CVE-2025-61984

## Summary

- **CVE ID:** CVE-2025-61984
- **Severity:** LOW
- **CVSS Score:** 3.6 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N)
- **CWE:** CWE-159
- **Published:** Oct 6, 2025
- **Last Modified:** Sep 8, 2026

## 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.)

## Affected Products

- OpenBSD — OpenSSH (0)

## References

- [CNA](https://www.openwall.com/lists/oss-security/2025/10/06/1)
- [CNA](https://marc.info/?l=openssh-unix-dev&m=175974522032149&w=2)
- [CNA](https://www.openssh.com/releasenotes.html#10.1p1)
- [CISA-ADP](https://dgl.cx/2025/10/bash-a-newline-ssh-proxycommand-cve-2025-61984)
- [CVE](http://www.openwall.com/lists/oss-security/2025/10/07/1)
- [CVE](http://www.openwall.com/lists/oss-security/2025/10/12/1)
- [CVE](https://www.vicarius.io/vsociety/posts/cve-2025-61984-detection-script-remote-code-execution-vulnerability-affecting-openssh)
- [CVE](https://www.vicarius.io/vsociety/posts/cve-2025-61984-mitigation-script-remote-code-execution-vulnerability-affecting-openssh)
- [siemens-SADP](https://cert-portal.siemens.com/productcert/html/ssa-019113.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 20.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._