{"id":"CVE-2026-77021","published":"2026-09-21T11:17:12.200","lastModified":"2026-09-21T20:17:32.393","description":"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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-409"],"vendors":[],"products":[],"references":[{"url":"https://checkmk.com/werk/22116","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}