CVE-2026-77021
Missing decompression size limit in agent receiver allows memory exhaustion via push agent data
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.
No summary for this CVE yet.
Weaknesses
Affected Products
Checkmk GmbH
commercial·DEaka checkmk
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
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