CVE-2026-77021
Published: September 21st, 2026
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.
Unknown
CVSS v2:
CVSS v2:
Status
| DocFilters Release | Package | State | Justification | Comment |
|---|---|---|---|---|
| daily | zlib (1.3) | Needs Triage | ||
| 26.3 | zlib (1.3) | Needs Triage | ||
| 26.2 | zlib (1.3) | Needs Triage | ||
| 26.1 | zlib (1.3) | Needs Triage | ||
| 25.4 | zlib (1.3) | Needs Triage | ||
| 25.3 | zlib (1.3) | Needs Triage | ||
| 25.2 | zlib (1.3) | Needs Triage | ||
| 25.1 | zlib (1.3) | Needs Triage | ||
| 24.4 | zlib (1.3) | Needs Triage | ||
| 24.4.0 | zlib (1.3) | Needs Triage | ||
| 24.3 | zlib (1.3) | Needs Triage | ||
| 24.2 | zlib (1.3) | Needs Triage | ||
| 24.1 | zlib (1.3) | Needs Triage | ||
| 23.3 | zlib (1.3) | Needs Triage | ||
| 23.2 | zlib (1.2.12) | Needs Triage | ||
| 23.1 | zlib (1.2.12) | Needs Triage | ||
| 22.4 | zlib (1.2.12) | Needs Triage | ||
| 22.3 | zlib (1.2.12) | Needs Triage | ||
| 22.2 | zlib (1.2.12) | Needs Triage | ||
| 22.1 | zlib (1.2.11) | Needs Triage | ||
| 21.11 | zlib (1.2.11) | Needs Triage | ||
| 21.8 | zlib (1.2.11) | Needs Triage | ||
| 21.5.0 | zlib (1.2.11) | Needs Triage | ||
| 21.2.0 | zlib (1.2.11) | Needs Triage | ||
| 11.4.19.3667 | zlib (1.2.11) | Needs Triage | ||
| 11.4.18.3599 | zlib (1.2.11) | Needs Triage | ||
| 11.4.16.3445 | zlib (1.2.11) | Needs Triage | ||
| 11.4.15.3368 | zlib (1.2.11) | Needs Triage | ||
| 11.4.14.3263 | zlib (1.2.11) | Needs Triage | ||
| 11.4.13.3179 | zlib (1.2.11) | Needs Triage | ||
| 11.4.12.3054 | zlib (1.2.11) | Needs Triage | ||
| 11.4.11.3040 | zlib (1.2.11) | Needs Triage | ||
| 11.4.11.2990 | zlib (1.2.11) | Needs Triage | ||
| 11.4.10.2934 | zlib (1.2.11) | Needs Triage | ||
| 11.4.9.2878 | zlib (1.2.11) | Needs Triage | ||
| 11.4.8.2822 | zlib (1.2.11) | Needs Triage |