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CVE-2013-6466

15
FAUCET Score

CVE-2013-6466 describes a denial-of-service vulnerability in Openswan versions 2.6.39 and earlier, affecting products like xelerance openswan. This flaw allows remote attackers to trigger a NULL pointer dereference and IKE daemon restart by sending specially crafted IKEv2 packets lacking expected payloads. With a CVSS score of 5.0 (medium severity), it is easily exploitable over the network with low attack complexity and no authentication required, leading to a partial availability impact. There is no evidence of active exploitation, no publicly available exploit code in Metasploit, Nuclei, or ExploitDB, and it has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.39CPE matchmatch criteria
cpe:2.3:a:xelerance:openswan:*:*:*:*:*:*:*:*
2.3.0CPE matchmatch criteria
cpe:2.3:a:xelerance:openswan:2.3.0:*:*:*:*:*:*:*
2.3.1CPE matchmatch criteria
cpe:2.3:a:xelerance:openswan:2.3.1:*:*:*:*:*:*:*
2.4.0CPE matchmatch criteria
cpe:2.3:a:xelerance:openswan:2.4.0:*:*:*:*:*:*:*
2.4.1CPE matchmatch criteria
cpe:2.3:a:xelerance:openswan:2.4.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.66%
Probability of exploitation in next 30 days
EPSS Percentile
84.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0266 is in the 77th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openswan-0:2.6.32-7.3.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openswan-0:2.6.32-27.2.el6_5
View patch

Vendor Advisories (1)

redhatCVE-2013-6466Moderate

openswan: dereferencing missing IKEv2 payloads causes pluto daemon to restart

Jan 15, 2014

References

rhn.redhat.com / errata/RHSA-2014-0185.html
cert.vde.com / en-us/advisories/vde-2017-001
exchange.xforce.ibmcloud.com / vulnerabilities/90524
libreswan.org / security/CVE-2013-6467/CVE-2013-6467.txt
Vendor Advisory
debian.org / security/2014/dsa-2893
securityfocus.com / bid/65155