CVE-2015-3240: n/a vulnerability

CVE-2015-3240: The pluto IKE daemon in libreswan before 3.15 and Openswan before 2.6.45, when built with NSS, allows remot...

The pluto IKE daemon in libreswan before 3.15 and Openswan before 2.6.45, when built with NSS, allows remote attackers to cause a denial of service (assertion failure and daemon restart) via a zero DH g^x value in a KE payload in a IKE packet.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 05:39 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2015-3240 can let a remote attacker crash and restart the IPsec VPN daemon on affected Libreswan or Openswan systems. The issue affects pluto when built with NSS. Business impact is mainly VPN disruption, not confirmed data theft or code execution. Exposure is most likely on internet-facing or partner-facing IPsec VPN gateways running affected Libreswan or Openswan versions with NSS support enabled. Systems not using pluto, not using NSS builds, or already updated past the fixed releases are not shown affected by the provided sources. Treat this as a reliability risk for VPN access. Prioritize public VPN gateways and critical remote-access paths, but do not rank it like a confirmed code-execution or data-breach issue based on the supplied evidence. Mitigation focus: Upgrade Libreswan to 3.15 or later where applicable.; Upgrade Openswan to 2.6.45 or later where applicable.; Apply vendor security updates from Red Hat, Gentoo, Oracle, or your Linux distributor..

Prepared: Jun 13, 2026, 21:45 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 9, 2015, 16:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
GLSA-201603-13CVE reference · vendor-advisory, x_refsource_GENTOO
https://libreswan.org/security/CVE-2015-3240/CVE-2015-3240.txtCVE reference · x_refsource_CONFIRM
[Openswan Users] 20150827 Openswan 2.6.45 releasedCVE reference · mailing-list, x_refsource_MLIST

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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