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CVE-2025-61984

Quick assessment

Affected
OpenBSD OpenSSH
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenSSH（OpenBSD Secure Shell）是加拿大OpenBSD开源的一套用于安全访问远程计算机的连接工具。该工具是SSH协议的开源实现，支持对所有的传输进行加密，可有效阻止窃听、连接劫持以及其他网络级的攻击。 OpenSSH 10.1之前版本存在安全漏洞，该漏洞源于允许来自命令行和配置文件扩展的用户名包含控制字符，可能导致代码执行。

CVSS 3.6 · Low EPSS 0.29% · P19

Affected Version Matrix 1

VendorProduct Version RangeStatus
OpenBSD OpenSSH < 10.1 affected
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I. Basic Information for CVE-2025-61984

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.)
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特殊元素净化处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenSSH 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenSSH（OpenBSD Secure Shell）是加拿大OpenBSD开源的一套用于安全访问远程计算机的连接工具。该工具是SSH协议的开源实现，支持对所有的传输进行加密，可有效阻止窃听、连接劫持以及其他网络级的攻击。 OpenSSH 10.1之前版本存在安全漏洞，该漏洞源于允许来自命令行和配置文件扩展的用户名包含控制字符，可能导致代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenBSD OpenSSH 0 ~ 10.1 -

II. Public POCs for CVE-2025-61984

# POC Description Source Link Shenlong Link
1 PoC for OpenSSH ProxyCommand CVE-2025-61984 https://github.com/dgl/cve-2025-61984-poc POC Details
2 None https://github.com/ThanhCT-CyX/Test-CVE-2025-61984 POC Details
3 PoC for CVE-2025-61984 https://github.com/flyskyfire/cve-2025-61984-poc POC Details
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III. Intelligence Information for CVE-2025-61984

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Mailing List Discussions for CVE-2025-61984 (1)

Other References for CVE-2025-61984 (1)

IV. Related Vulnerabilities

Same product: OpenSSH
Same vendor: OpenBSD
Same weakness: CWE-159

V. Comments for CVE-2025-61984

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