Openswan vulnerabilitiesRanked by how likely they are to be used.

Product112 versions
The short answer

Openswan is made by Xelerance. We track 16 published vulnerabilities in it, across 112 versions. None of them is on the list of flaws known to be exploited today. If you run Openswan, keep it on a version the vendor still supports.

See the riskiest flaws

We keep watching the known-exploited list.

Known exploited

Which Openswan vulnerabilities are being exploited?

This is the list that matters most: flaws criminals are using now.

None of Openswan's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.

Exploit likelihood

Which Openswan flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 7.5%

    The Internet Key Exchange version 1 (IKEv1) implementation in Openswan 2 (openswan-2) before 2.4.4, and freeswan in SUSE LINUX 9.1 before 2.04_1.5.4-1.23, allow remote attackers to cause a denial of service via (1) a...

    CVSS7.8Published18 Nov 2005
  2. 4.0%

    Buffer overflow in programs/pluto/xauth.c in the client in Openswan 2.6.26 through 2.6.28 might allow remote authenticated gateways to execute arbitrary code or cause a denial of service via a long cisco_banner (aka...

    CVSS6.5Published5 Oct 2010
  3. 3.9%

    Buffer overflow in programs/pluto/xauth.c in the client in Openswan 2.6.25 through 2.6.28 might allow remote authenticated gateways to execute arbitrary code or cause a denial of service via long (1) cisco_dns_info...

    CVSS6.5Published5 Oct 2010
  4. 3.2%

    The pluto IKE daemon in Openswan and Strongswan IPsec 2.6 before 2.6.21 and 2.4 before 2.4.14, and Strongswan 4.2 before 4.2.14 and 2.8 before 2.8.9, allows remote attackers to cause a denial of service (daemon crash...

    CVSS5.0Published1 Apr 2009
  5. 2.7%

    Openswan 2.6.39 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets that lack expected payloads.

    CVSS5.0Published26 Jan 2014
  6. 2.5%

    programs/pluto/xauth.c in the client in Openswan 2.6.25 through 2.6.28 allows remote authenticated gateways to execute arbitrary commands via shell metacharacters in (1) cisco_dns_info or (2) cisco_domain_info data...

    CVSS6.5Published5 Oct 2010
  7. 2.4%

    Buffer overflow in the atodn function in Openswan before 2.6.39, when Opportunistic Encryption is enabled and an RSA key is being used, allows remote attackers to cause a denial of service (pluto IKE daemon crash)...

    CVSS6.8Published9 Jul 2013
  8. 2.4%

    Openswan 2.6.40 allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets that lack expected payloads.

    CVSS5.0Published26 Nov 2014
  9. 2.4%

    programs/pluto/xauth.c in the client in Openswan 2.6.26 through 2.6.28 allows remote authenticated gateways to execute arbitrary commands via shell metacharacters in the cisco_banner (aka server_banner) field, a...

    CVSS6.5Published5 Oct 2010
  10. 2.4%

    The ASN.1 parser (pluto/asn1.c, libstrongswan/asn1/asn1.c, libstrongswan/asn1/asn1_parser.c) in (a) strongSwan 2.8 before 2.8.10, 4.2 before 4.2.16, and 4.3 before 4.3.2; and (b) openSwan 2.6 before 2.6.22 and 2.4...

    CVSS5.0Published25 Jun 2009
Precursor Intelligence

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We track 16 published vulnerabilities listed under the name Openswan, across 112 versions.

None of Openswan's vulnerabilities is on the list of flaws known to be exploited today.

Create a Precursor Intelligence account and track Openswan. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.