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CVE-2025-11947— bftpd Configuration File options.c expand_groups heap-based overflow

Quick assessment

Affected
n/a bftpd
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.

Bftpd是一款FTP（文件传输协议）服务器。 bftpd 6.2及之前版本存在安全漏洞，该漏洞源于组件Configuration File Handler的文件options.c中函数expand_groups存在堆缓冲区溢出，可能导致本地主机攻击。

CVSS 4.5 · Medium EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-11947

Vulnerability Information
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Vulnerability Title
bftpd Configuration File options.c expand_groups heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in bftpd up to 6.2. Impacted is the function expand_groups of the file options.c of the component Configuration File Handler. Executing a manipulation can lead to heap-based buffer overflow. It is possible to launch the attack on the local host. Attacks of this nature are highly complex. The exploitability is considered difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
bftpd 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bftpd是一款FTP（文件传输协议）服务器。 bftpd 6.2及之前版本存在安全漏洞，该漏洞源于组件Configuration File Handler的文件options.c中函数expand_groups存在堆缓冲区溢出，可能导致本地主机攻击。
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
- bftpd 6.0 cpe:2.3:a:bftpd:bftpd:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2025-11947

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III. Intelligence Information for CVE-2025-11947

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News Coverage for CVE-2025-11947 (1)

Same Patch Batch · n/a · 2025-10-19 · 4 CVEs total

CVE-2025-11940 7.0 HIGH LibreWolf Installer setup.nsi uncontrolled search path
CVE-2025-11938 5.6 MEDIUM ChurchCRM setup.php deserialization
CVE-2025-11939 4.7 MEDIUM ChurchCRM Backup Restore RestoreJob.php path traversal

IV. Related Vulnerabilities

Same vendor: n/a
Same weakness: CWE-122

V. Comments for CVE-2025-11947

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