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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 0.13% · P3

Affected Version Matrix 7

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 10anyunaffected
Red HatRed Hat Enterprise Linux 6anyunaffected
Red HatRed Hat Enterprise Linux 7anyunaffected
Red HatRed Hat Enterprise Linux 8anyunaffected
Red HatRed Hat Enterprise Linux 9anyunaffected
Red HatRed Hat Hardened Images0.12.0-1.1.hum1< *unaffected
Red HatRed Hat OpenShift Container Platform 4anyunaffected
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对搜索路径元素未加控制
Source: CVE Program / CVE List V5
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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Vendor Advisories for CVE-2025-14821 (2)

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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