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CVE-2025-14821— Libssh: libssh: insecure default configuration leads to local man-in-the-middle attacks on windows

CVSS 7.8 · High EPSS 0.01% · P2
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I. Basic Information for CVE-2025-14821

Vulnerability Information
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Vulnerability Title
Libssh: libssh: insecure default configuration leads to local man-in-the-middle attacks on windows
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对搜索路径元素未加控制
Source: NVD (National Vulnerability Database)
Vulnerability Title
libssh 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libssh是libssh组织的一个用于访问SSH服务的C语言开发包，它能够执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。 libssh存在安全漏洞，该漏洞源于Windows系统上不安全的默认配置，可能导致本地中间人攻击、SSH连接安全降级和受信任主机信息被操纵。
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

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Hardened Images 0.12.0-1.1.hum1 ~ * cpe:/a:redhat:hummingbird:1
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2025-14821

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III. Intelligence Information for CVE-2025-14821

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Same Patch Batch · Red Hat · 2026-04-07 · 4 CVEs total

CVE-2026-46319.8 CRITICALCockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument i
CVE-2026-47408.2 HIGHRhacm: open cluster management (ocm): cross-cluster privilege escalation via improper kube
CVE-2026-57455.5 MEDIUMLibarchive: a null pointer dereference vulnerability exists in the acl parser of libarchiv

IV. Related Vulnerabilities

Same product: Red Hat Hardened Images
Same vendor: Red Hat
Same weakness: CWE-427

V. Comments for CVE-2025-14821

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