CVE-2026-77021 (GCVE-0-2026-77021)
Vulnerability from cvelistv5
Published
2026-09-21 10:57
Modified
2026-09-21 19:40
Severity ?
5.3 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CWE
  • CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Summary
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
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Version: 2.5.0   ≤
Version: 2.4.0   ≤
Version: 2.3.0   ≤
Version: 2.2.0   ≤
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