CVE-2025-61962

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

04/10/2025

Last modified:

04/11/2025

Description

In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.90 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.90

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://gitlab.com/fetchmail/fetchmail/-/commit/4c3cebfa4e659fb778ca2cae0ccb3f69201609a8
https://www.fetchmail.info/fetchmail-SA-2025-01.txt
https://www.openwall.com/lists/oss-security/2025/10/03/2
http://www.openwall.com/lists/oss-security/2025/10/04/3