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CVE-2025-8114— Libssh: null pointer dereference in libssh kex session id calculation

Quick assessment

Affected
CVE-2025-8114
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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存在代码问题漏洞，该漏洞源于密钥交换过程中计算会话ID时可能发生空指针取消引用，可能导致崩溃。

CVSS 4.7 · Medium EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 8

VendorProduct Version RangeStatus
None None < 0.11.3 affected
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any unaffected
Red Hat Red Hat Enterprise Linux 7 any unaffected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 0:0.10.4-18.el9< * unaffected
0:0.10.4-18.el9< * unaffected
Red Hat Red Hat OpenShift Container Platform 4 any affected

I. Basic Information for CVE-2025-8114

Vulnerability Information
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Vulnerability Title
Libssh: null pointer dereference in libssh kex session id calculation
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
libssh 代码问题漏洞
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存在代码问题漏洞，该漏洞源于密钥交换过程中计算会话ID时可能发生空指针取消引用，可能导致崩溃。
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
- - 0 ~ 0.11.3 -
Red Hat Red Hat Enterprise Linux 9 0:0.10.4-18.el9 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9 0:0.10.4-18.el9 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2025-8114

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III. Intelligence Information for CVE-2025-8114

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Patches & Fixes for CVE-2025-8114 (1)

Vendor Advisories for CVE-2025-8114 (2)

IV. Related Vulnerabilities

Same weakness: CWE-476

V. Comments for CVE-2025-8114

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