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CVE-2025-11624— Buffer overwrite when processing file handles with the SFTP server

Quick assessment

Affected
wolfSSH wolfSSH
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.

wolfSSH是wolfSSL开源的一个小型、快速、可移植的 SSH 实现，包括对 SCP 和 SFTP 的支持。 wolfSSH存在安全漏洞，该漏洞源于接收特制数据包时可能出现栈缓冲区溢出，可能导致执行任意代码。

AI Predicted 9.1 Difficulty: Easy EPSS 0.37% · P28

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-11624

Vulnerability Information
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Vulnerability Title
Buffer overwrite when processing file handles with the SFTP server
Source: CVE Program / CVE List V5
Vulnerability Description
Potential stack buffer overwrite on the SFTP server side when receiving a malicious packet that has a handle size larger than the system handle or file descriptor size, but smaller than max handle size allowed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
wolfSSH 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
wolfSSH是wolfSSL开源的一个小型、快速、可移植的 SSH 实现，包括对 SCP 和 SFTP 的支持。 wolfSSH存在安全漏洞，该漏洞源于接收特制数据包时可能出现栈缓冲区溢出，可能导致执行任意代码。
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
wolfSSH wolfSSH 1.3.0 ~ 1.4.20 -

II. Public POCs for CVE-2025-11624

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III. Intelligence Information for CVE-2025-11624

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IV. Related Vulnerabilities

Same product: wolfSSH
Same weakness: CWE-787

V. Comments for CVE-2025-11624

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