Vulnerability Database

309,136

Total vulnerabilities in the database

CVE-2021-40905

The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does not properly sanitise the uploading of ".mkp" files, which are Extension Packages, making remote code execution possible. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session of a user with administrator role. NOTE: the vendor states that this is the intended behavior: admins are supposed to be able to execute code in this manner

  • Published: Mar 25, 2022
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-40905
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 8.8
  • AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: Medium
  • Score: 6.8
  • AV:N/AC:M/Au:N/C:P/I:P/A:P

CWEs:

Software From Fixed in
tribe29 / checkmk 1.5.0 2.0.0
checkmk / checkmk 2.0.0 2.0.0.x
checkmk / checkmk 2.0.0-b1 2.0.0-b1.x
checkmk / checkmk 2.0.0-b2 2.0.0-b2.x
checkmk / checkmk 2.0.0-b3 2.0.0-b3.x
checkmk / checkmk 2.0.0-b4 2.0.0-b4.x
checkmk / checkmk 2.0.0-b5 2.0.0-b5.x
checkmk / checkmk 2.0.0-b6 2.0.0-b6.x
checkmk / checkmk 2.0.0-b7 2.0.0-b7.x
checkmk / checkmk 2.0.0-b8 2.0.0-b8.x
checkmk / checkmk 2.0.0-i1 2.0.0-i1.x
checkmk / checkmk 2.0.0-p1 2.0.0-p1.x
checkmk / checkmk 2.0.0-p10 2.0.0-p10.x
checkmk / checkmk 2.0.0-p11 2.0.0-p11.x
checkmk / checkmk 2.0.0-p12 2.0.0-p12.x
checkmk / checkmk 2.0.0-p13 2.0.0-p13.x
checkmk / checkmk 2.0.0-p14 2.0.0-p14.x
checkmk / checkmk 2.0.0-p15 2.0.0-p15.x
checkmk / checkmk 2.0.0-p16 2.0.0-p16.x
checkmk / checkmk 2.0.0-p17 2.0.0-p17.x
checkmk / checkmk 2.0.0-p2 2.0.0-p2.x
checkmk / checkmk 2.0.0-p3 2.0.0-p3.x
checkmk / checkmk 2.0.0-p4 2.0.0-p4.x
checkmk / checkmk 2.0.0-p5 2.0.0-p5.x
checkmk / checkmk 2.0.0-p6 2.0.0-p6.x
checkmk / checkmk 2.0.0-p7 2.0.0-p7.x
checkmk / checkmk 2.0.0-p9 2.0.0-p9.x
checkmk / checkmk 2.0.0-p8 2.0.0-p8.x