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CVE-2025-61962

Quick assessment

Affected
fetchmail fetchmail
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.

Fetchmail是一个下载邮件的应用程序。 Fetchmail 6.5.6之前版本存在安全漏洞，该漏洞源于SMTP客户端在畸形环境中接收334状态码时进行身份验证，可能导致崩溃。

CVSS 5.9 · Medium EPSS 0.38% · P32

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-61962

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
值分隔符转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Fetchmail 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fetchmail是一个下载邮件的应用程序。 Fetchmail 6.5.6之前版本存在安全漏洞，该漏洞源于SMTP客户端在畸形环境中接收334状态码时进行身份验证，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
fetchmail fetchmail 5.9.9 ~ 6.5.6 -

II. Public POCs for CVE-2025-61962

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III. Intelligence Information for CVE-2025-61962

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Patches & Fixes for CVE-2025-61962 (1)

Mailing List Discussions for CVE-2025-61962 (1)

IV. Related Vulnerabilities

Same weakness: CWE-142

V. Comments for CVE-2025-61962

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