CVE-2025-61962 — Improper Neutralization of Value Delimiters in Fetchmail

CWE-142 — Improper Neutralization of Value Delimiters6 documents6 sources
Severity
5.9MEDIUMNVD
EPSS
0.1%
top 80.28%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
FetchmailDebian Fetchmail
Timeline
PublishedOct 4
Latest updateOct 23

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.2 | Impact: 3.6

Affected Packages2 packages

▶debiandebian/fetchmail< fetchmail 6.5.6-1 (sid)
▶CVEListV5fetchmail/fetchmail5.9.9 — 6.5.6

🔴Vulnerability Details

2
GHSA
GHSA-q9v7-qrhr-3q9v: In fetchmail before 6↗2025-10-04
▶
OSV
CVE-2025-61962: In fetchmail before 6↗2025-10-04
▶

📋Vendor Advisories

3
Ubuntu
fetchmail vulnerability↗2025-10-23
▶
Red Hat
fetchmail: Fetchmail denial of service↗2025-10-04
▶
Debian
CVE-2025-61962: fetchmail - In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon re...↗2025
▶
CVE-2025-61962 — Fetchmail vulnerability | cvebase