CVE-2026-78132: Strongswan

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

strongSwan 5.1.3 through 6.0.7 has an infinite loop in the x509 plugin's attribute certificate parser for ietfAttrSyntax.

Affected products

• Strongswan Strongswan: from 5.1.3, before 6.1.0 (fixed in 6.1.0)

Published 2026-09-11. Last modified 2026-09-14.