CVE-2009-1574

Exp

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.

Published: 2009-05-06 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-1574 is rated High Exploit Risk (64.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 11.63%, 95th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2009-1574

EDB-ID Source Kind Published Link
8669 exploit_db edb 2009-05-13 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-1574

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 15.73% 11.63% -4.10%
2 2026-05-06 13.48% 15.73% +2.25%
3 2026-03-15 — 13.48% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-1574

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2009-1574

OS Trackers for CVE-2009-1574

vendor priority summary link
gentoo normal CVE-2009-1574: 1 GLSA(s) (200905-03), 1 atom(s) (net-firewall/ipsec-tools); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-1574
redhat high — https://access.redhat.com/security/cve/CVE-2009-1574
ubuntu medium CVE-2009-1574 medium priority: Ubuntu including 1 source packages (ipsec-tools), 5 status rows across 5 suites (dapper, hardy, intrepid, jaunty, upstream): released 5. https://ubuntu.com/security/CVE-2009-1574

Affected software / configurations for CVE-2009-1574

Vendor Product Version Raw CPE
ipsec-tools ipsec-tools <= 0.7.1 cpe:2.3:a:ipsec-tools:ipsec-tools:*:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.1 cpe:2.3:a:ipsec-tools:ipsec-tools:0.1:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.2 cpe:2.3:a:ipsec-tools:ipsec-tools:0.2:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.2.1 cpe:2.3:a:ipsec-tools:ipsec-tools:0.2.1:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.2.2 cpe:2.3:a:ipsec-tools:ipsec-tools:0.2.2:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.2.3 cpe:2.3:a:ipsec-tools:ipsec-tools:0.2.3:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.2.4 cpe:2.3:a:ipsec-tools:ipsec-tools:0.2.4:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.3 cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.3 cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:rc1:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.3 cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:rc2:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.3 cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:rc3:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.3 cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:rc4:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.3 cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:rc5:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.3.1 cpe:2.3:a:ipsec-tools:ipsec-tools:0.3.1:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.3.2 cpe:2.3:a:ipsec-tools:ipsec-tools:0.3.2:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.3.3 cpe:2.3:a:ipsec-tools:ipsec-tools:0.3.3:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.4 cpe:2.3:a:ipsec-tools:ipsec-tools:0.4:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.4 cpe:2.3:a:ipsec-tools:ipsec-tools:0.4:rc1:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.5 cpe:2.3:a:ipsec-tools:ipsec-tools:0.5:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.6.1 cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.1:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.6.2 cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.2:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.6.3 cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.3:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.6.4 cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.4:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.6.5 cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.5:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.6.6 cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.6:*:*:*:*:*:*:*
ipsec-tools ipsec-tools 0.7 cpe:2.3:a:ipsec-tools:ipsec-tools:0.7:*:*:*:*:*:*:*

References for CVE-2009-1574

URL Tags
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
http://lists.apple.com/archives/security-announce/2010//Dec/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
http://secunia.com/advisories/35113
http://secunia.com/advisories/35153
http://secunia.com/advisories/35159
http://secunia.com/advisories/35212
http://secunia.com/advisories/35404
http://secunia.com/advisories/35685
http://security.gentoo.org/glsa/glsa-200905-03.xml
http://sourceforge.net/project/shownotes.php?group_id=74601&release_id=677611
http://support.apple.com/kb/HT3937
http://support.apple.com/kb/HT4298
http://www.debian.org/security/2009/dsa-1804
http://www.mandriva.com/security/advisories?name=MDVSA-2009:112
http://www.openwall.com/lists/oss-security/2009/04/29/6 Patch
http://www.openwall.com/lists/oss-security/2009/05/04/3 Patch
http://www.redhat.com/support/errata/RHSA-2009-1036.html
http://www.securityfocus.com/bid/34765
http://www.ubuntu.com/usn/USN-785-1
http://www.vupen.com/english/advisories/2009/3184
https://bugzilla.redhat.com/show_bug.cgi?id=497990 Exploit Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/50412
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9624
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00725.html
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00746.html
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00789.html
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