CVE-2011-3380

No known exploitation. EPSS puts it in the 82nd percentile. A vendor fix is available.

CVSS 2.05.0Medium EPSS percentile82nd2.3% chance in 30 days CISA KEVNot listedNo confirmed exploitation
No public exploit known FixVendor fixNo build named by the sources

Published 2011-11-17Updated 2026-04-29Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS82nd

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

2.3% chance of exploitation activity in the next 30 days, which ranks it in the 82nd percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

5 events over 5334 days, from the signal feeds we watch.

2026-06-25OpenVAS check added
2026-04-29Patch availablerecord updated
2011-11-17Publishedweakness classified

Affected products

xelerancecommercialaka openswan
- openswanOn-premNetworking Infrastructure / vpn-gateway
Red Hat Inc.commercial · USaka red hat
- Red Hat Enterprise LinuxOSOn-premOperating Systems / linux-distro

And 1 more affected product. See all after sign-in

Technical detail

CVSS 2.0 vector

Open in the CVSS calculator

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

Scored 5.0 by NVD.

How it is reached

Access Vector NetworkExploitable remotely over the network
Access Complexity LowNo special conditions required
Authentication NoneNo authentication required

Impact if exploited

Confidentiality NoneNo confidentiality impact
Integrity NoneNo integrity impact
Availability PartialReduced performance or service disruption

Weaknesses

NVD-CWE-OtherNo name in the record

Sources

References in the record

And 1 more reference. See all after sign-in

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