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CVE-2005-3732

21
FAUCET Score

CVE-2005-3732 describes a denial-of-service vulnerability in the IKEv1 implementation within racoon, part of ipsec-tools versions prior to 0.6.3. Specifically, crafted IKE packets sent to racoon in aggressive mode can trigger a null dereference, leading to a crash. This vulnerability carries a high CVSS score of 7.8, indicating a critical impact with complete availability loss, and can be exploited remotely with low attack complexity and no authentication required. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
0.5CPE matchmatch criteria
cpe:2.3:a:ipsec-tools:ipsec-tools:0.5:*:*:*:*:*:*:*
0.5.1CPE matchmatch criteria
cpe:2.3:a:ipsec-tools:ipsec-tools:0.5.1:*:*:*:*:*:*:*
0.5.2CPE matchmatch criteria
cpe:2.3:a:ipsec-tools:ipsec-tools:0.5.2:*:*:*:*:*:*:*
0.6CPE matchmatch criteria
cpe:2.3:a:ipsec-tools:ipsec-tools:0.6:*:*:*:*:*:*:*
0.6.1CPE matchmatch criteria
cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.57%
Probability of exploitation in next 30 days
EPSS Percentile
90.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0457 is in the 83rd percentile among its peer group of 51,466 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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 3Fixed in: ipsec-tools-0:0.2.5-0.7.rhel3.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: ipsec-tools-0:0.3.3-6.rhel4.1
View patch

Vendor Advisories (1)

redhatCVE-2005-3732Low

security flaw

Nov 20, 2005

References

patches.sgi.com / support/free/security/advisories/20060501-01-U.asc
archives.neohapsis.com / archives/bugtraq/2005-12/0161.html
cvs.sourceforge.net / viewcvs.py/ipsec-tools/ipsec-tools/src/racoon/isakmp_agg.c
Patch
rhn.redhat.com / errata/RHSA-2006-0267.html
secunia.com / advisories/17668
PatchVendor Advisory
secunia.com / advisories/17822
Vendor Advisory
secunia.com / advisories/17980
Vendor Advisory
secunia.com / advisories/18115
Vendor Advisory
secunia.com / advisories/18616
secunia.com / advisories/18742
Vendor Advisory
secunia.com / advisories/19833
Vendor Advisory
secunia.com / advisories/20210
Vendor Advisory
securitytracker.com / id
sourceforge.net / mailarchive/forum.php
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9857
usn.ubuntu.com / 221-1
debian.org / security/2006/dsa-965
ee.oulu.fi / research/ouspg/protos/testing/c09/isakmp
gentoo.org / security/en/glsa/glsa-200512-04.xml
mandriva.com / security/advisories
niscc.gov.uk / niscc/docs/re-20051114-01014.pdf
novell.com / linux/security/advisories/2005_70_ipsec.html
securityfocus.com / archive/1/436343/100/0/threaded
securityfocus.com / bid/15523
Patch
vupen.com / english/advisories/2005/2521
Vendor Advisory