How severe is CVE-2005-3732?

CVE-2005-3732 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2005-3732 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-3732?

CVE-2005-3732 primarily affects Ipsec-tools. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-3732?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2005-3732 published?

CVE-2005-3732 was published on 2005-11-21 and last updated on 2026-06-16.

CVE-2005-3732

CVE-2005-3732 is a high-severity vulnerability in Ipsec-tools with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 5% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Ipsec-tools
Published: 2005-11-21
Last modified: 2026-06-16

Description

The Internet Key Exchange version 1 (IKEv1) implementation (isakmp_agg.c) in racoon in ipsec-tools before 0.6.3, when running in aggressive mode, allows remote attackers to cause a denial of service (null dereference and crash) via crafted IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1.

Frequently asked questions

What is CVE-2005-3732?: The Internet Key Exchange version 1 (IKEv1) implementation (isakmp_agg.c) in racoon in ipsec-tools before 0.6.3, when running in aggressive mode, allows remote attackers to cause a denial of service (null dereference and crash) via crafted IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1.
How severe is CVE-2005-3732?: CVE-2005-3732 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2005-3732 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-3732?: CVE-2005-3732 primarily affects Ipsec-tools. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-3732?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2005-3732 published?: CVE-2005-3732 was published on 2005-11-21 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:a:ipsec-tools:ipsec-tools:0.5:*:*:*:*:*:*:*
cpe:2.3:a:ipsec-tools:ipsec-tools:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:ipsec-tools:ipsec-tools:0.5.2:*:*:*:*:*:*:*
cpe:2.3:a:ipsec-tools:ipsec-tools:0.6:*:*:*:*:*:*:*
cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.1:*:*:*:*:*:*:*
cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.2:*:*:*:*:*:*:*

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Other CWE-399 (Resource Management Errors) vulnerabilities

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CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
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