CVE-2026-77021
UNKNOWN
NVD
CVSS Score
0
Severity
UNKNOWN
Published
Sep 21, 2026
Vendor
unknown
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.