CVE-2025-61962

fetchmail: Fetchmail denial of service

Published Oct 4, 2025 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-32416 In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context.
Ubuntu USN Ubuntu USN USN-7838-1 fetchmail vulnerability
Ubuntu USN Ubuntu USN USN-9013-1 Fetchmail vulnerabilities
History
Type Values Removed Values Added
Title fetchmail: Fetchmail denial of service
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Fetchmail
Fetchmail fetchmail
Vendors & Products Fetchmail
Fetchmail fetchmail
Type Values Removed Values Added
Description In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context.
Weaknesses CWE-142
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Nov 4, 2025, 9:14 PM
Reserved
Oct 4, 2025, 12:00 AM
Status
Deferred
Published
Oct 4, 2025, 3:15 AM
Modified
Oct 19, 2026, 4:10 PM
Severity
Moderate
Public date
Oct 4, 2025, 12:00 AM