CVE-2018-6916: Freebsd

Critical severity, CVSS 9.8. EPSS: 2.1% chance of exploitation in the next 30 days.

In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p7, 10.4-STABLE, 10.4-RELEASE-p7, and 10.3-RELEASE-p28, the kernel does not properly validate IPsec packets coming from a trusted host. Additionally, a use-after-free vulnerability exists in the IPsec AH handling code. This issue could cause a system crash or other unpredictable results.

Affected products

• Freebsd Freebsd: from 11.0, before 11.1 (fixed in 11.1); version 10.3 only; version 10.4 only

Published 2018-03-09. Last modified 2026-06-17.