Linux · Red Hat · Security advisory · October 27, 2026

RHSA-2026:89748: libreswan security update

RHSA-2026:89748, released October 27, 2026, fixes 3 CVEs in libreswan (version 0:4.15-11.el9_8). None of them is reported as exploited. Patch Radar priority: High.

High
CVEs closed
3
None rated Critical
Exploited
0
None reported
Highest CVSS
7.5
Base score, 0 to 10
Highest EPSS
0.0066
51st percentile

Priority of the 3 CVEs

Patch now 0 Urgent 0 High 3 Routine 0

Fixed package versions

ProductReleaseFixed in
libreswanRHEL 90:4.15-11.el9_8

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
High CVE-2026-77206 IKEv2 pre-authentication Null Pointer Dereference in EAP code7.5 0.0066 None reported
High CVE-2026-77207 Null Pointer Dereference in PKCS#7 bundle with no certificates7.5 0.0046 None reported
High CVE-2026-94453 IKEv2 Use-After-Free bug when using IKE-over-TCP7.5 0.0045 None reported
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