Checkmk up to 2.2.0/2.3.0/2.4.0p15 REST API Endpoint insufficient permissions or privileges

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Checkmk up to 2.2.0/2.3.0/2.4.0p15 and classified as critical. The affected element is an unknown function of the component REST API Endpoint. Performing a manipulation results in insufficient permissions or privileges. This vulnerability is identified as CVE-2025-58121. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Checkmk up to 2.2.0/2.3.0/2.4.0p15. This affects an unknown part of the component REST API Endpoint. The manipulation with an unknown input leads to a insufficient permissions or privileges vulnerability. CWE is classifying the issue as CWE-280. The product does not handle or incorrectly handles when it has insufficient privileges to access resources or functionality as specified by their permissions. This may cause it to follow unexpected code paths that may leave the product in an invalid state. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Insufficient permission validation on multiple REST API endpoints in Checkmk 2.2.0, 2.3.0, and 2.4.0 before version 2.4.0p16 allows low-privileged users to perform unauthorized actions or obtain sensitive information

It is possible to read the advisory at checkmk.com. This vulnerability is uniquely identified as CVE-2025-58121 since 08/25/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 275785 (Linux Distros Unpatched Vulnerability : CVE-2025-58121), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.4.0p16 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (275785) and CERT Bund (WID-SEC-2025-2617). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Checkmk Checkmk

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Insufficient permissions or privileges
CWE: CWE-280 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 275785
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-58121

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Checkmk 2.4.0p16

Timelineinfo

08/25/2025 CVE reserved
11/18/2025 +85 days Advisory disclosed
11/18/2025 +0 days VulDB entry created
11/24/2025 +6 days VulDB entry last update

Sourcesinfo

Advisory: checkmk.com
Status: Confirmed

CVE: CVE-2025-58121 (🔒)
GCVE (CVE): GCVE-0-2025-58121
GCVE (VulDB): GCVE-100-332811
CERT Bund: WID-SEC-2025-2617 - Checkmk: Mehrere Schwachstellen

Entryinfo

Created: 11/18/2025 20:06
Updated: 11/24/2025 17:17
Changes: 11/18/2025 20:06 (65), 11/19/2025 02:02 (7), 11/20/2025 05:51 (2), 11/24/2025 17:17 (11)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

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