CVE-2026-27831: Bluedragonsecurity Rldns

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

rldns is an open source DNS server. Version 1.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue.

Affected products

• Bluedragonsecurity Rldns: version 1.3 only

Published 2026-02-26. Last modified 2026-06-17.