How severe is CVE-2011-3380?

CVE-2011-3380 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-3380 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3380?

CVE-2011-3380 primarily affects Xelerance Openswan. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3380?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-3380 published?

CVE-2011-3380 was published on 2011-11-17 and last updated on 2026-06-16.

CVE-2011-3380

CVE-2011-3380 is a medium-severity vulnerability in Xelerance Openswan with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Xelerance Openswan
Published: 2011-11-17
Last modified: 2026-06-16

Description

Openswan 2.6.29 through 2.6.35 allows remote attackers to cause a denial of service (NULL pointer dereference and pluto IKE daemon crash) via an ISAKMP message with an invalid KEY_LENGTH attribute, which is not properly handled by the error handling function.

Frequently asked questions

What is CVE-2011-3380?: Openswan 2.6.29 through 2.6.35 allows remote attackers to cause a denial of service (NULL pointer dereference and pluto IKE daemon crash) via an ISAKMP message with an invalid KEY_LENGTH attribute, which is not properly handled by the error handling function.
How severe is CVE-2011-3380?: CVE-2011-3380 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-3380 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3380?: CVE-2011-3380 primarily affects Xelerance Openswan. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3380?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3380 published?: CVE-2011-3380 was published on 2011-11-17 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:xelerance:openswan:2.6.29:*:*:*:*:*:*:*
cpe:2.3:a:xelerance:openswan:2.6.30:*:*:*:*:*:*:*
cpe:2.3:a:xelerance:openswan:2.6.31:*:*:*:*:*:*:*
cpe:2.3:a:xelerance:openswan:2.6.32:*:*:*:*:*:*:*
cpe:2.3:a:xelerance:openswan:2.6.33:*:*:*:*:*:*:*
cpe:2.3:a:xelerance:openswan:2.6.34:*:*:*:*:*:*:*
cpe:2.3:a:xelerance:openswan:2.6.35:*:*:*:*:*:*:*

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