Checkmk up to 2.1.0p50/2.2.0p40/2.4.0b1 session expiration

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Checkmk up to 2.1.0p50/2.2.0p40/2.4.0b1. This issue affects some unknown processing. This manipulation causes session expiration. This vulnerability appears as CVE-2025-2596. The attack may be initiated remotely. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as problematic was found in Checkmk up to 2.1.0p50/2.2.0p40/2.4.0b1. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a session expiration vulnerability. The CWE definition for the vulnerability is CWE-613. According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization." As an impact it is known to affect integrity. The summary by CVE is:

Session logout could be overwritten in Checkmk GmbH's Checkmk versions <2.3.0p30, <2.2.0p41, and 2.1.0p49 (EOL)

The advisory is shared at checkmk.com. This vulnerability is known as CVE-2025-2596 since 03/21/2025. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Applying the patch 2.2.0p41/2.3.0p30/2.4.0b2 is able to eliminate this problem.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: 4.5
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Session expiration
CWE: CWE-613
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 2.2.0p41/2.3.0p30/2.4.0b2

Timelineinfo

03/21/2025 🔍
03/26/2025 +5 days 🔍
03/26/2025 +0 days 🔍
08/25/2025 +152 days 🔍

Sourcesinfo

Advisory: checkmk.com
Status: Confirmed

CVE: CVE-2025-2596 (🔍)
GCVE (CVE): GCVE-0-2025-2596
GCVE (VulDB): GCVE-100-301393

Entryinfo

Created: 03/26/2025 12:13
Updated: 08/25/2025 05:30
Changes: 03/26/2025 12:13 (64), 08/25/2025 05:30 (12)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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