CVE-2026-78133

High

Description

libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.

SeverityHigh
CVSS7.5
Exploit probability—
ProductStrongswan
PublishedSep 11, 2026
First seenSep 11, 2026

How to fix

Update
  • strongswan strongswan6.1.0 or later

Affected products

ProductAffected versionsFixed in
strongswan strongswan6.0.0 ≤ v < 6.1.06.1.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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