PT-2025-40622 · Fetchmail+4 · Fetchmail+4

Matthias Andree · Published 2025-10-04 · Updated 2026-03-26 · CVE-2025-61962

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions fetchmail versions prior to 6.5.6

Description The SMTP client in fetchmail can experience a crash during authentication when it receives a 334 status code in a malformed context.

Recommendations Update to fetchmail version 6.5.6 or later.

Fix

Weakness Enumeration

CWE-142

Related Identifiers

AZL-68127

AZL-68183

CVE-2025-61962

MGASA-2025-0238

OESA-2025-2423

OESA-2025-2424

OESA-2025-2425

OESA-2025-2426

OESA-2025-2427

OESA-2025-2428

OPENSUSE-SU-2025:15653-1

OPENSUSE-SU-2026:20432-1

SUSE-SU-2025:3845-1

SUSE-SU-2025:3966-1

SUSE-SU-2025_3845-1

SUSE-SU-2025_3966-1

SUSE-SU-2026:20935-1

USN-7838-1

Affected Products

Debian

Linuxmint

Suse

Ubuntu

Fetchmail

References · 43

• https://osv.dev/vulnerability/USN-7838-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2025-2424 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7838-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-61962 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:3966-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-61962 · Security Note
• https://osv.dev/vulnerability/OESA-2025-2426 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2025-2423 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2025-2428 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-68127 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:3845-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-61962 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-61962 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-61962 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20935-1 · Vendor Advisory