CVE-2026-78133

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

• Published Sep 11, 2026
• CVSS 7.5 high
• 0.4% chance of exploitation in the next 30 days (EPSS)
• A fix is available

CVE-2026-78133 at the National Vulnerability Database