Rapid7’s 2026 Global Cybersecurity Summit is now available on-demand.Watch sessions.
Rapid7

vulnerability

F5: CVE-2020-12663: K37661551: Unbound DNS Cache vulnerabilities CVE-2020-12662 and CVE-2020-12663

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Jun 3, 2020
Added
Jun 17, 2026
Modified
Jun 17, 2026

Description

Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.

Solution

f5-bigip-upgrade-latest
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.