What’s Vulnerable › Vulnerabilities

CVE-2016-5391

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-06-13 · updated 2026-06-17
• Weakness: CWE-476

Description

libreswan before 3.18 allows remote attackers to cause a denial of service (NULL pointer dereference and pluto daemon restart).

Affected products

• Fedoraproject Fedora: 23, 24
• The Libreswan Project libreswan: through 3.17

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1356183
• https://libreswan.org/security/CVE-2016-5391/CVE-2016-5391.txt
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/65R6OA5AY7K2UBQUDOLOS5Y3SCULQI6I/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UKMS7R4TG6LTAGEBOWVUXF6LAWQXLNXV/
• https://bugzilla.redhat.com/show_bug.cgi?id=1356183
• https://libreswan.org/security/CVE-2016-5391/CVE-2016-5391.txt
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/65R6OA5AY7K2UBQUDOLOS5Y3SCULQI6I/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UKMS7R4TG6LTAGEBOWVUXF6LAWQXLNXV/

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