MEDIUM 5.3 NVD

CVE-2026-77021

Improper handling of highly compressed data (data amplification) in Checkmk <2.5.0p14, <2.4.0p37, <2.3.0p51 and 2.2.0 (EOL) allows an attacker who controls a ho

Improper handling of highly compressed data (data amplification) in Checkmk <2.5.0p14, <2.4.0p37, <2.3.0p51 and 2.2.0 (EOL) allows an attacker who controls a host registered for push mode to exhaust the memory of the agent receiver by sending a small zlib compressed payload that decompresses to an arbitrary size.

References

https://checkmk.com/werk/22116

Published: 2026-09-21 · Source: NVD · Feed updated: 2026-09-21

This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-09-21 via NVD.

vulnfeed aggregates 14604 vulnerabilities from NVD, CISA KEV, Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.