CVE-2007-4565

sink.c in fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service ...

5.0 MediumFix available

sink.c in fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service (NULL dereference and application crash) by refusing certain warning messages that are sent over SMTP.

Exploit likelihood

1.97%Down 0.7 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

sink.c in fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service (NULL dereference and application crash) by refusing certain warning messages that are sent over SMTP.

Record: CVE-2007-4565
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

sink.c in fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service (NULL dereference and application crash) by refusing certain warning messages that are sent over SMTP.

Record: CVE-2007-4565
Updated: 2026-11-02

EUVDEUVD-2007-4547 No score

sink.c in fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service (NULL dereference and application crash) by refusing certain warning messages that are sent over SMTP.

Record: EUVD-2007-4547
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8x9c-m5v9-8766 No score

sink.c in fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service ...

sink.c in fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service (NULL dereference and application crash) by refusing certain warning messages that are sent over SMTP.

Record: GHSA-8x9c-m5v9-8766
Updated: 2026-11-02

OSV No score

sink.c in fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service (NULL dereference and application crash) by refusing certain warning messages that are sent over SMTP.

Record: CVE-2007-4565
Updated: 2026-11-02

OSVDEBIAN-CVE-2007-4565 No score

sink.c in fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service (NULL dereference and application crash) by refusing certain warning messages that are sent over SMTP.

Record: DEBIAN-CVE-2007-4565
Updated: 2026-11-02

OSVopenSUSE-SU-2024:10753-1 No score

fetchmail-6.4.21-2.1 on GA media

These are all security issues fixed in the fetchmail-6.4.21-2.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:10753-1
Updated: 2026-11-02

Affected products

fetchmail

Affected packages

Affected packages
Package	Affected	Fixed
`fetchmail` Debian:12	before 6.3.8-8	6.3.8-8
`fetchmail` Debian:13	before 6.3.8-8	6.3.8-8
`fetchmail` Debian:14	before 6.3.8-8	6.3.8-8
`fetchmail` Debian:4.0	before 6.3.6-1etch1, plus listed versions 6.3.6-1	6.3.6-1etch1
`fetchmail` Red Hat:enterprise_linux:3::as	before 0:6.2.0-3.el3.5	0:6.2.0-3.el3.5
`fetchmail-debuginfo` Red Hat:enterprise_linux:3::as	before 0:6.2.0-3.el3.5	0:6.2.0-3.el3.5
`fetchmail` Red Hat:enterprise_linux:3::desktop	before 0:6.2.0-3.el3.5	0:6.2.0-3.el3.5
`fetchmail-debuginfo` Red Hat:enterprise_linux:3::desktop	before 0:6.2.0-3.el3.5	0:6.2.0-3.el3.5
`fetchmail` Red Hat:enterprise_linux:3::es	before 0:6.2.0-3.el3.5	0:6.2.0-3.el3.5
`fetchmail-debuginfo` Red Hat:enterprise_linux:3::es	before 0:6.2.0-3.el3.5	0:6.2.0-3.el3.5

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Affected packages
Package	Affected	Fixed
`fetchmail` Red Hat:enterprise_linux:3::ws	before 0:6.2.0-3.el3.5	0:6.2.0-3.el3.5
`fetchmail-debuginfo` Red Hat:enterprise_linux:3::ws	before 0:6.2.0-3.el3.5	0:6.2.0-3.el3.5
`fetchmail` Red Hat:enterprise_linux:4::as	before 0:6.2.5-6.0.1.el4_8.1	0:6.2.5-6.0.1.el4_8.1
`fetchmail-debuginfo` Red Hat:enterprise_linux:4::as	before 0:6.2.5-6.0.1.el4_8.1	0:6.2.5-6.0.1.el4_8.1
`fetchmail` Red Hat:enterprise_linux:4::desktop	before 0:6.2.5-6.0.1.el4_8.1	0:6.2.5-6.0.1.el4_8.1
`fetchmail-debuginfo` Red Hat:enterprise_linux:4::desktop	before 0:6.2.5-6.0.1.el4_8.1	0:6.2.5-6.0.1.el4_8.1
`fetchmail` Red Hat:enterprise_linux:4::es	before 0:6.2.5-6.0.1.el4_8.1	0:6.2.5-6.0.1.el4_8.1
`fetchmail-debuginfo` Red Hat:enterprise_linux:4::es	before 0:6.2.5-6.0.1.el4_8.1	0:6.2.5-6.0.1.el4_8.1
`fetchmail` Red Hat:enterprise_linux:4::ws	before 0:6.2.5-6.0.1.el4_8.1	0:6.2.5-6.0.1.el4_8.1
`fetchmail-debuginfo` Red Hat:enterprise_linux:4::ws	before 0:6.2.5-6.0.1.el4_8.1	0:6.2.5-6.0.1.el4_8.1
`fetchmail` Red Hat:enterprise_linux:5::client_workstation	before 0:6.3.6-1.1.el5_3.1	0:6.3.6-1.1.el5_3.1
`fetchmail-debuginfo` Red Hat:enterprise_linux:5::client_workstation	before 0:6.3.6-1.1.el5_3.1	0:6.3.6-1.1.el5_3.1
`fetchmail` Red Hat:enterprise_linux:5::server	before 0:6.3.6-1.1.el5_3.1	0:6.3.6-1.1.el5_3.1
`fetchmail-debuginfo` Red Hat:enterprise_linux:5::server	before 0:6.3.6-1.1.el5_3.1	0:6.3.6-1.1.el5_3.1
`fetchmail` openSUSE:Tumbleweed	before 6.4.21-2.1	6.4.21-2.1

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	affected, aliases, facts, references, title	GitHub Advisories, OSV
Nov 2, 2026	first indexed	CVE List, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2007-4565 is a medium vulnerability (CVSS 5.0) in Fetchmail, published August 28, 2007. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.97%, the 80th percentile. Fixed in fetchmail 6.3.8-8.

References

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