libcharon in strongSwan 5.9.7 through 6.0.7 mishandles behavioral workflow in the IKEv2 state machine. Because CREATE_CHILD_SA requests are mishandled, there can be an authentication bypass.

MediumVendor CVSS 5.6 / 10 1 CVE Published Sep 12, 2026 at 1:02 AM UTC

Summary

Mariner

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Sep 12, 2026 at 1:02 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 13, 2026 at 8:45 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Sep 19, 2026 at 1:47 AM UTC
Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
Oct 28, 2026 at 3:45 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Details collected from Microsoft Security Response Center.

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