CVE-2009-1574

racoon/isakmp_frag.c in ipsec-tools before 0.7.2 allows remote attackers to cause a denial of...

5.0 MediumPublic exploitFix available

racoon/isakmp_frag.c in ipsec-tools before 0.7.2 allows remote attackers to cause a denial of service (crash) via crafted fragmented packets without a payload, which triggers a NULL pointer dereference.

Exploit likelihood

11.6%Down 0.9 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2009-1574
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

Record: CVE-2009-1574
Updated: 2026-11-02

EUVDEUVD-2009-1570 No score

Record: EUVD-2009-1570
Updated: 2026-11-03

GitHub AdvisoriesGHSA-x442-849f-mv4r No score

racoon/isakmp_frag.c in ipsec-tools before 0.7.2 allows remote attackers to cause a denial of...

Record: GHSA-x442-849f-mv4r
Updated: 2026-11-02

Affected products

ipsec-tools

Affected packages

Affected packages
Package	Affected	Fixed
`ipsec-tools` Debian:4.0	before 1:0.6.6-3.1etch3, plus listed versions 1:0.6.6-3.11:0.6.6-3.1etch1	1:0.6.6-3.1etch3
`ipsec-tools` Debian:5.0	before 1:0.7.1-1.3+lenny2, plus listed versions 1:0.7.1-1.3	1:0.7.1-1.3+lenny2
`ipsec-tools` Red Hat:enterprise_linux:5::client	before 0:0.6.5-13.el5_3.1	0:0.6.5-13.el5_3.1
`ipsec-tools-debuginfo` Red Hat:enterprise_linux:5::client	before 0:0.6.5-13.el5_3.1	0:0.6.5-13.el5_3.1
`ipsec-tools` Red Hat:enterprise_linux:5::server	before 0:0.6.5-13.el5_3.1	0:0.6.5-13.el5_3.1
`ipsec-tools-debuginfo` Red Hat:enterprise_linux:5::server	before 0:0.6.5-13.el5_3.1	0:0.6.5-13.el5_3.1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	IPsec-Tools < 0.7.2 (racoon frag-isakmp) - Multiple Remote Denial of Service Vulnerabilities (PoC)	2009-05-13

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

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

In short

CVE-2009-1574 is a medium vulnerability (CVSS 5.0) in Ipsec-tools, published May 6, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 11.6%, the 96th percentile. Fixed in ipsec-tools 1:0.6.6-3.1etch3.

References

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