omd: Local privilege escalation when executing omd commands as root
Summary
| CVE | CVE-2025-39666 |
|---|---|
| State | PUBLISHED |
| Assigner | Checkmk |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-04-07 13:16:44 UTC |
| Updated | 2026-04-14 15:39:05 UTC |
| Description | Local privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site user to escalate their privileges to root, by manipulating files in the site context that are processed when the `omd` administrative command is run by root. |
Risk And Classification
Primary CVSS: v4.0 9.3 CRITICAL from [email protected]
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.000120000 probability, percentile 0.016710000 (date 2026-04-15)
Problem Types: CWE-426 | CWE-829 | CWE-426 CWE-426: Untrusted Search Path | CWE-829 CWE-829: Inclusion of Functionality from Untrusted Control Sphere
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 9.3 | CRITICAL | CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/C... |
| 4.0 | CNA | DECLARED | 9.3 | CRITICAL | CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H |
| 3.1 | [email protected] | Primary | 7.3 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
CVSS v4.0 Breakdown
Attack Vector
LocalAttack Complexity
LowAttack Requirements
NonePrivileges Required
HighUser Interaction
NoneConfidentiality
HighIntegrity
HighAvailability
HighSub Conf.
HighSub Integrity
HighSub Availability
HighCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
RequiredScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Checkmk | Checkmk | 2.2.0 | - | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b1 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b2 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b3 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b4 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b5 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b6 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b7 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b8 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | i1 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p1 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p10 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p11 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p12 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p13 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p14 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p15 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p16 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p17 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p18 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p19 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p2 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p20 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p21 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p22 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p23 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p24 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p25 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p26 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p27 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p28 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p29 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p3 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p30 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p31 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p32 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p33 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p34 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p35 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p36 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p37 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p38 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p39 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p4 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p40 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p41 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p42 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p43 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p44 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p45 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p46 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p47 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p5 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p6 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p7 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p8 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p9 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | - | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b1 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b2 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b3 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b4 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b5 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b6 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p1 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p10 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p11 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p12 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p13 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p14 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p15 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p16 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p17 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p18 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p19 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p2 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p20 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p21 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p22 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p23 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p24 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p25 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p26 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p27 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p28 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p29 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p3 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p30 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p31 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p32 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p33 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p34 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p35 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p36 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p37 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p38 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p39 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p4 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p40 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p41 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p42 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p43 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p44 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p45 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p5 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p6 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p7 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p8 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p9 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | - | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b1 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b2 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b3 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b4 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b5 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b6 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p1 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p10 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p11 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p12 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p13 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p14 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p15 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p16 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p17 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p18 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p19 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p2 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p20 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p21 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p22 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p23 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p24 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p3 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p4 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p5 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p6 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p7 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p8 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p9 | All | All |
| Application | Checkmk | Checkmk | 2.5.0 | b1 | All | All |
| Application | Checkmk | Checkmk | 2.5.0 | b2 | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Checkmk GmbH | Checkmk | affected 2.2.0 semver | Not specified |
| CNA | Checkmk GmbH | Checkmk | affected 2.3.0 2.3.0p46 semver | Not specified |
| CNA | Checkmk GmbH | Checkmk | affected 2.4.0 2.4.0p25 semver | Not specified |
| CNA | Checkmk GmbH | Checkmk | affected 2.5.0b1 2.5.0b3 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| checkmk.com/werk/18891 | [email protected] | checkmk.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.