CVE-2013-6466

Openswan 2.6.39 and earlier allows remote attackers to cause a denial of service (NULL pointer...

5.0 MediumFix available

Openswan 2.6.39 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets that lack expected payloads.

Exploit likelihood

2.66%Up 1.3 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Openswan 2.6.39 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets that lack expected payloads.

Record: CVE-2013-6466
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

Openswan 2.6.39 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets that lack expected payloads.

Record: CVE-2013-6466
Updated: 2026-11-02

EUVDEUVD-2013-6270 No score

Openswan 2.6.39 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets that lack expected payloads.

Record: EUVD-2013-6270
Updated: 2026-11-03

GitHub AdvisoriesGHSA-gc3w-rhj3-96v9 No score

Openswan 2.6.39 and earlier allows remote attackers to cause a denial of service (NULL pointer...

Openswan 2.6.39 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets that lack expected payloads.

Record: GHSA-gc3w-rhj3-96v9
Updated: 2026-11-02

OSVMGASA-2014-0097 No score

Updated openswan packages fix CVE-2013-6466

Updated openswan packages fix security vulnerability:

A NULL pointer dereference flaw was discovered in the way Openswan's IKE daemon processed IKEv2 payloads. A remote attacker could send specially crafted IKEv2 payloads that, when processed, would lead to a denial of service (daemon crash), possibly causing existing VPN connections to be dropped (CVE-2013-6466).

Record: MGASA-2014-0097
Updated: 2026-11-02

Affected products

xelerance openswan

Affected packages

Affected packages
Package	Affected	Fixed
`openswan` Debian:6.0 From an advisory covering 2 CVEs	before 1:2.6.28+dfsg-5+squeeze2, plus listed versions 1:2.6.28+dfsg-51:2.6.28+dfsg-5+squeeze11:2.6.28+dfsg-5+squeeze1~bpo50+1	1:2.6.28+dfsg-5+squeeze2
`openswan` Debian:7 From an advisory covering 2 CVEs	before 1:2.6.37-3+deb7u1, plus listed versions 1:2.6.37-3	1:2.6.37-3+deb7u1
`openswan` Mageia:3	before 2.6.28-5.1.mga3	2.6.28-5.1.mga3
`openswan` Mageia:4	before 2.6.39-3.1.mga4	2.6.39-3.1.mga4
`openswan` Red Hat:enterprise_linux:5::client	before 0:2.6.32-7.3.el5_10	0:2.6.32-7.3.el5_10
`openswan-debuginfo` Red Hat:enterprise_linux:5::client	before 0:2.6.32-7.3.el5_10	0:2.6.32-7.3.el5_10
`openswan-doc` Red Hat:enterprise_linux:5::client	before 0:2.6.32-7.3.el5_10	0:2.6.32-7.3.el5_10
`openswan` Red Hat:enterprise_linux:5::server	before 0:2.6.32-7.3.el5_10	0:2.6.32-7.3.el5_10
`openswan-debuginfo` Red Hat:enterprise_linux:5::server	before 0:2.6.32-7.3.el5_10	0:2.6.32-7.3.el5_10
`openswan-doc` Red Hat:enterprise_linux:5::server	before 0:2.6.32-7.3.el5_10	0:2.6.32-7.3.el5_10

Show 9 moreShow less

Affected packages
Package	Affected	Fixed
`openswan` Red Hat:enterprise_linux:6::client	before 0:2.6.32-27.2.el6_5	0:2.6.32-27.2.el6_5
`openswan-debuginfo` Red Hat:enterprise_linux:6::client	before 0:2.6.32-27.2.el6_5	0:2.6.32-27.2.el6_5
`openswan-doc` Red Hat:enterprise_linux:6::client	before 0:2.6.32-27.2.el6_5	0:2.6.32-27.2.el6_5
`openswan` Red Hat:enterprise_linux:6::server	before 0:2.6.32-27.2.el6_5	0:2.6.32-27.2.el6_5
`openswan-debuginfo` Red Hat:enterprise_linux:6::server	before 0:2.6.32-27.2.el6_5	0:2.6.32-27.2.el6_5
`openswan-doc` Red Hat:enterprise_linux:6::server	before 0:2.6.32-27.2.el6_5	0:2.6.32-27.2.el6_5
`openswan` Red Hat:enterprise_linux:6::workstation	before 0:2.6.32-27.2.el6_5	0:2.6.32-27.2.el6_5
`openswan-debuginfo` Red Hat:enterprise_linux:6::workstation	before 0:2.6.32-27.2.el6_5	0:2.6.32-27.2.el6_5
`openswan-doc` Red Hat:enterprise_linux:6::workstation	before 0:2.6.32-27.2.el6_5	0:2.6.32-27.2.el6_5

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2013-6466 is a medium vulnerability (CVSS 5.0) in Xelerance Openswan, published January 26, 2014. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.66%, the 85th percentile. Fixed in openswan 2.6.28-5.1.mga3.

References

Show 10 moreShow less