CVE-2016-7835: Dena h2o

Critical severity, CVSS 9.1. EPSS: 2.2% chance of exploitation in the next 30 days.

Use-after-free vulnerability in H2O allows remote attackers to cause a denial-of-service (DoS) or obtain server certificate private keys and possibly other information.

Affected products

• Dena h2o: up to and including 2.0.4
• h2o Project h2o: version 2.1.0 only

Published 2017-06-09. Last modified 2026-06-17.