CVE-2023-38712

6.5 mediumEPSS 0.8%

Medium (6.5) in libreswan libreswan. EPSS 0.8% chance of exploitation in the next 30 days.

An issue was discovered in Libreswan 3.x and 4.x before 4.12. When an IKEv1 ISAKMP SA Informational Exchange packet contains a Delete/Notify payload followed by further Notifies that act on the ISAKMP SA, such as a duplicated Delete/Notify message, a NULL pointer dereference on the deleted state causes the pluto daemon to crash and restart.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 57% of CVEs (scores of 2026-10-31)
CWE: CWE-476
Published: 2023-08-25
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

libreswan:libreswan

References

https://github.com/libreswan/libreswan/tags
https://libreswan.org/security/CVE-2023-38712/
https://github.com/libreswan/libreswan/tags
https://libreswan.org/security/CVE-2023-38712/

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