CVE-2026-77021 | Checkmk up to 2.2.0/2.3.0p50/2.4.0p36/2.5.0p13 Agent Receiver resource consumption

September 21, 2026 Yanac

A vulnerability, which was classified as critical, was found in Checkmk up to 2.2.0/2.3.0p50/2.4.0p36/2.5.0p13. Affected is an unknown function of the component Agent Receiver. Executing a manipulation can lead to resource consumption.

This vulnerability appears as CVE-2026-77021. The attack may be performed from remote. There is no available exploit.

You should upgrade the affected component.VulDB Recent EntriesRead More