CVE-2018-21027: Boa

Critical severity, CVSS 9.8. EPSS: 2.4% chance of exploitation in the next 30 days.

Boa through 0.94.14rc21 allows remote attackers to trigger an out-of-memory (OOM) condition because malloc is mishandled.

Affected products

• Boa Boa: up to and including 0.94.14.21

Published 2019-10-11. Last modified 2026-06-17.