CVE-2025-61962

MEDIUM

fetchmail 5.9.9-6.5.5 - Denial of Service via Malformed SMTP 334 Status Code

Title source: llm
STIX 2.1

Description

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

References (4)

Core 4

Scores

CVSS v3 5.9
EPSS 0.0006
EPSS Percentile 19.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-142
Status published
Products (1)
fetchmail/fetchmail 5.9.9 - 6.5.6
Published Oct 04, 2025
Tracked Since Feb 18, 2026