medium5.3
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 h…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Checkmk | Checkmk | before 2.5.0p14 |
Versions were read from the advisory text. No structured product data has been published for this record yet.