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194 vulnerabilities found for Checkmk by Checkmk GmbH
CVE-2026-111573 (GCVE-0-2026-111573)
Vulnerability from nvd – Published: 2026-11-06 15:59 – Updated: 2026-11-06 16:27
VLAI
EPSS
VEX
Title
Privilege escalation via unprotected Windows agent data folder
Summary
Incorrect permissions on the Checkmk Windows agent's data directory, caused by a race condition that discards the permission changes during service start, in Checkmk <2.5.0p18, <2.4.0p39, <2.3.0p52 and 2.2.0 (EOL) allow a local user to execute arbitrary code as SYSTEM by placing scripts in the agent's plugins or local folders, and to read the agent controller's private key.
Severity
CWE
- CWE-277 - Insecure Inherited Permissions
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19231 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p18
(semver)
Affected: 2.4.0 , < 2.4.0p39 (semver) Affected: 2.3.0 , < 2.3.0p52 (semver) Affected: 2.2.0 (semver) cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:* |
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CVE-2026-103682 (GCVE-0-2026-103682)
Vulnerability from nvd – Published: 2026-11-06 09:07 – Updated: 2026-11-06 09:07
VLAI
EPSS
VEX
Title
Jolokia special agent exposes password in process list
Summary
Invocation of the Jolokia special agent with the login password in the command line in Checkmk versions 2.5.0 before 2.5.0p16 allows a local user on the Checkmk server to read the Jolokia login password from the process list while the special agent is running. This affects both explicitly configured passwords and passwords from the password store.
Severity
CWE
- CWE-214 - Invocation of Process Using Visible Sensitive Information
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22409 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p16
(semver)
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CVE-2026-103674 (GCVE-0-2026-103674)
Vulnerability from nvd – Published: 2026-11-06 09:06 – Updated: 2026-11-06 09:06
VLAI
EPSS
VEX
Title
NetApp ONTAP special agent exposes password in process list
Summary
Invocation of the NetApp ONTAP special agent with the login password in the command line in Checkmk version 2.5.0 before 2.5.0p16 allows a local user on the Checkmk server to read the NetApp login password from the process list while the special agent is running. This affects both explicitly configured passwords and passwords from the password store.
Severity
CWE
- CWE-214 - Invocation of Process Using Visible Sensitive Information
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22429 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p16
(semver)
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CVE-2026-117611 (GCVE-0-2026-117611)
Vulnerability from nvd – Published: 2026-10-29 09:32 – Updated: 2026-10-29 14:13
VLAI
EPSS
VEX
Title
Trust of compromised eMudhra root CA in bundled CA stores
Summary
Improper certificate validation in Checkmk <2.5.0p18, <2.4.0p39, <2.3.0p52 and 2.2.0 (EOL): the Certificate Authority stores bundled with "certifi" and "webpki-roots" include a root CA that trusts eMudhra (emSign) intermediate certificates whose private keys are public.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 14:12 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22623 | vendor-advisory |
| https://checkmk.com/werk/22169 | vendor-advisory |
| https://github.com/advisories/GHSA-6q48-6c7w-9gw2 | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p18
(semver)
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CVE-2026-113461 (GCVE-0-2026-113461)
Vulnerability from nvd – Published: 2026-10-21 18:11 – Updated: 2026-10-23 11:06
VLAI
EPSS
VEX
Title
mk-oracle: Local privilege escalation via insecure Oracle Home library loading
Summary
Local privilege escalation in Checkmk 2.5.0p14 allows a local user with write access to the Oracle client library directory of an Oracle home listed in the 'oratab' file or to the 'oratab' file itself to execute code as root if an agent has the 'mk-oracle' plugin enabled.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-22 23:04 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22621 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0p14
(semver)
cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* |
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CVE-2026-14452 (GCVE-0-2026-14452)
Vulnerability from nvd – Published: 2026-10-16 09:51 – Updated: 2026-10-16 10:40
VLAI
EPSS
VEX
Title
Open redirect and XSS via reset_url parameter
Summary
Improper validation of the reset_url parameter of the Setup in-page search in Checkmk <2.5.0p15, <2.4.0p38, <2.3.0p51 and 2.2.0 (EOL) allows an attacker to execute arbitrary script in the session of an authenticated user with Setup access, or to redirect that user to an arbitrary external site, by tricking the user into opening a crafted URL and clicking the Reset button or submitting an empty search.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 10:40 UTC
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22314 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p15
(semver)
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CVE-2026-105331 (GCVE-0-2026-105331)
Vulnerability from nvd – Published: 2026-10-08 14:19 – Updated: 2026-10-09 03:55
VLAI
EPSS
VEX
Title
mk-oracle: Local privilege escalation via malicious Oracle Instant Client
Summary
Local privilege escalation in Checkmk 2.5.0 before 2.5.0p10 allows a user with access to edit the Oracle Instant Client referenced by the agent plugin 'mk-oracle' to escalate their privileges if an agent has this plugin enabled.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 00:00 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22619 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
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CVE-2026-92882 (GCVE-0-2026-92882)
Vulnerability from nvd – Published: 2026-09-22 10:42 – Updated: 2026-10-05 14:14
VLAI
EPSS
VEX
Title
Redact SNMP community, SNMPv3 pass phrases, and IPMI password in host config REST API GET responses
Summary
Insufficiently protected credentials in the host and folder configuration endpoints of the REST API in Checkmk <2.5.0p15, <2.4.0p38, <2.3.0p51 and 2.2.0 (EOL) allows an authenticated user who may view a host's configuration to read stored SNMP community strings, SNMPv3 auth and privacy pass phrases and IPMI passwords in clear text from GET responses, although the setup GUI never displays these values.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 13:05 UTC
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20077 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p15
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CVE-2026-90990 (GCVE-0-2026-90990)
Vulnerability from nvd – Published: 2026-09-22 10:43 – Updated: 2026-09-22 13:04
VLAI
EPSS
VEX
Title
Livestatus injection via monitoring filter values
Summary
Improper neutralization of newlines in filter values in the monitoring host and service list APIs in Checkmk <2.5.0p14 allows an authenticated user to inject additional Livestatus query headers, bypassing object visibility restrictions in count queries to infer information about hosts and services outside their contact groups and occupying web server and Livestatus workers for an attacker-controlled duration.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 13:04 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19604 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p14
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CVE-2026-77021 (GCVE-0-2026-77021)
Vulnerability from nvd – Published: 2026-09-21 10:57 – Updated: 2026-09-21 19:40
VLAI
EPSS
VEX
Title
Missing decompression size limit in agent receiver allows memory exhaustion via push agent data
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 14:40 UTC
CWE
- CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22116 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p14
(semver)
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CVE-2026-15937 (GCVE-0-2026-15937)
Vulnerability from nvd – Published: 2026-09-04 08:24 – Updated: 2026-09-04 19:39
VLAI
EPSS
VEX
Title
Agent receiver certificate confusion allows authentication with a certificate issued for another endpoint
Summary
Improper certificate validation in Checkmk <2.5.0p10 allows a relay and a push agent that share the same UUID to reuse each other's mTLS certificate to authenticate against agent receiver endpoints in either direction, because the endpoints do not verify that the certificate was issued by their own root certificate.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 19:39 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19735 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
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CVE-2026-17548 (GCVE-0-2026-17548)
Vulnerability from nvd – Published: 2026-08-25 08:35 – Updated: 2026-08-25 19:48
VLAI
EPSS
VEX
Title
Missing authorization for viewing background jobs
Summary
Missing authorization in Checkmk <2.5.0p12, <2.4.0p36, <2.3.0p50 and all 2.2.0 versions allows an authenticated user who knows the ID of a background job to view that job's status and results.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:48 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22115 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p12
(semver)
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CVE-2026-15576 (GCVE-0-2026-15576)
Vulnerability from nvd – Published: 2026-08-21 11:10 – Updated: 2026-08-21 11:53
VLAI
EPSS
VEX
Title
Agent receiver accepts mTLS requests without a client certificate
Summary
Improper authentication in the agent receiver of Checkmk <2.5.0p10 allows an unauthenticated remote attacker to bypass mutual TLS client certificate verification of relay endpoints by supplying a fixed placeholder identity in the request URL, resulting in limited impact on integrity and availability. Only the Cloud, Ultimate and Ultimate MT editions are affected, as other editions do not expose relay endpoints.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 11:53 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20174 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
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CVE-2026-7485 (GCVE-0-2026-7485)
Vulnerability from nvd – Published: 2026-08-20 12:12 – Updated: 2026-08-26 14:16
VLAI
EPSS
VEX
Title
Frozen BI aggregations leak host and service names to unauthorized users
Summary
Incorrect authorization in frozen BI aggregations in Checkmk <2.5.0p2, <2.4.0p29, <2.3.0p47, and all 2.2.0 versions allows an authenticated user with restricted host and service visibility to learn the names and the existence of hosts and services they are not authorized to see.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 13:27 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/16917 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p2
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Affected: 2.4.0 , < 2.4.0p29 (semver) Affected: 2.3.0 , < 2.3.0p47 (semver) Affected: 2.2.0 (semver) cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:* |
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CVE-2026-15227 (GCVE-0-2026-15227)
Vulnerability from nvd – Published: 2026-07-31 12:21 – Updated: 2026-07-31 19:50
VLAI
EPSS
VEX
Title
Missing Authorization Allows Editing of Foreign Reports
Summary
Missing authorization in Checkmk <2.5.0p10, <2.4.0p35, <2.3.0p49, and 2.2.0 (EOL) allows an authenticated user lacking the "Edit foreign Reports" permission to modify reports owned by other users.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 19:50 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20003 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
(semver)
Affected: 2.4.0 , < 2.4.0p35 (semver) Affected: 2.3.0 , < 2.3.0p49 (semver) Affected: 2.2.0 (semver) cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:* |
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CVE-2026-111573 (GCVE-0-2026-111573)
Vulnerability from cvelistv5 – Published: 2026-11-06 15:59 – Updated: 2026-11-06 16:27
VLAI
EPSS
VEX
Title
Privilege escalation via unprotected Windows agent data folder
Summary
Incorrect permissions on the Checkmk Windows agent's data directory, caused by a race condition that discards the permission changes during service start, in Checkmk <2.5.0p18, <2.4.0p39, <2.3.0p52 and 2.2.0 (EOL) allow a local user to execute arbitrary code as SYSTEM by placing scripts in the agent's plugins or local folders, and to read the agent controller's private key.
Severity
CWE
- CWE-277 - Insecure Inherited Permissions
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19231 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p18
(semver)
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CVE-2026-103682 (GCVE-0-2026-103682)
Vulnerability from cvelistv5 – Published: 2026-11-06 09:07 – Updated: 2026-11-06 09:07
VLAI
EPSS
VEX
Title
Jolokia special agent exposes password in process list
Summary
Invocation of the Jolokia special agent with the login password in the command line in Checkmk versions 2.5.0 before 2.5.0p16 allows a local user on the Checkmk server to read the Jolokia login password from the process list while the special agent is running. This affects both explicitly configured passwords and passwords from the password store.
Severity
CWE
- CWE-214 - Invocation of Process Using Visible Sensitive Information
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22409 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p16
(semver)
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CVE-2026-103674 (GCVE-0-2026-103674)
Vulnerability from cvelistv5 – Published: 2026-11-06 09:06 – Updated: 2026-11-06 09:06
VLAI
EPSS
VEX
Title
NetApp ONTAP special agent exposes password in process list
Summary
Invocation of the NetApp ONTAP special agent with the login password in the command line in Checkmk version 2.5.0 before 2.5.0p16 allows a local user on the Checkmk server to read the NetApp login password from the process list while the special agent is running. This affects both explicitly configured passwords and passwords from the password store.
Severity
CWE
- CWE-214 - Invocation of Process Using Visible Sensitive Information
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22429 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p16
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CVE-2026-117611 (GCVE-0-2026-117611)
Vulnerability from cvelistv5 – Published: 2026-10-29 09:32 – Updated: 2026-10-29 14:13
VLAI
EPSS
VEX
Title
Trust of compromised eMudhra root CA in bundled CA stores
Summary
Improper certificate validation in Checkmk <2.5.0p18, <2.4.0p39, <2.3.0p52 and 2.2.0 (EOL): the Certificate Authority stores bundled with "certifi" and "webpki-roots" include a root CA that trusts eMudhra (emSign) intermediate certificates whose private keys are public.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 14:12 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22623 | vendor-advisory |
| https://checkmk.com/werk/22169 | vendor-advisory |
| https://github.com/advisories/GHSA-6q48-6c7w-9gw2 | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p18
(semver)
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CVE-2026-113461 (GCVE-0-2026-113461)
Vulnerability from cvelistv5 – Published: 2026-10-21 18:11 – Updated: 2026-10-23 11:06
VLAI
EPSS
VEX
Title
mk-oracle: Local privilege escalation via insecure Oracle Home library loading
Summary
Local privilege escalation in Checkmk 2.5.0p14 allows a local user with write access to the Oracle client library directory of an Oracle home listed in the 'oratab' file or to the 'oratab' file itself to execute code as root if an agent has the 'mk-oracle' plugin enabled.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-22 23:04 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22621 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0p14
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CVE-2026-14452 (GCVE-0-2026-14452)
Vulnerability from cvelistv5 – Published: 2026-10-16 09:51 – Updated: 2026-10-16 10:40
VLAI
EPSS
VEX
Title
Open redirect and XSS via reset_url parameter
Summary
Improper validation of the reset_url parameter of the Setup in-page search in Checkmk <2.5.0p15, <2.4.0p38, <2.3.0p51 and 2.2.0 (EOL) allows an attacker to execute arbitrary script in the session of an authenticated user with Setup access, or to redirect that user to an arbitrary external site, by tricking the user into opening a crafted URL and clicking the Reset button or submitting an empty search.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 10:40 UTC
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22314 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p15
(semver)
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CVE-2026-105331 (GCVE-0-2026-105331)
Vulnerability from cvelistv5 – Published: 2026-10-08 14:19 – Updated: 2026-10-09 03:55
VLAI
EPSS
VEX
Title
mk-oracle: Local privilege escalation via malicious Oracle Instant Client
Summary
Local privilege escalation in Checkmk 2.5.0 before 2.5.0p10 allows a user with access to edit the Oracle Instant Client referenced by the agent plugin 'mk-oracle' to escalate their privileges if an agent has this plugin enabled.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 00:00 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22619 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
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CVE-2026-90990 (GCVE-0-2026-90990)
Vulnerability from cvelistv5 – Published: 2026-09-22 10:43 – Updated: 2026-09-22 13:04
VLAI
EPSS
VEX
Title
Livestatus injection via monitoring filter values
Summary
Improper neutralization of newlines in filter values in the monitoring host and service list APIs in Checkmk <2.5.0p14 allows an authenticated user to inject additional Livestatus query headers, bypassing object visibility restrictions in count queries to infer information about hosts and services outside their contact groups and occupying web server and Livestatus workers for an attacker-controlled duration.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 13:04 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19604 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p14
(semver)
cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* |
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CVE-2026-92882 (GCVE-0-2026-92882)
Vulnerability from cvelistv5 – Published: 2026-09-22 10:42 – Updated: 2026-10-05 14:14
VLAI
EPSS
VEX
Title
Redact SNMP community, SNMPv3 pass phrases, and IPMI password in host config REST API GET responses
Summary
Insufficiently protected credentials in the host and folder configuration endpoints of the REST API in Checkmk <2.5.0p15, <2.4.0p38, <2.3.0p51 and 2.2.0 (EOL) allows an authenticated user who may view a host's configuration to read stored SNMP community strings, SNMPv3 auth and privacy pass phrases and IPMI passwords in clear text from GET responses, although the setup GUI never displays these values.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 13:05 UTC
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20077 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p15
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CVE-2026-77021 (GCVE-0-2026-77021)
Vulnerability from cvelistv5 – Published: 2026-09-21 10:57 – Updated: 2026-09-21 19:40
VLAI
EPSS
VEX
Title
Missing decompression size limit in agent receiver allows memory exhaustion via push agent data
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 14:40 UTC
CWE
- CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22116 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p14
(semver)
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CVE-2026-15937 (GCVE-0-2026-15937)
Vulnerability from cvelistv5 – Published: 2026-09-04 08:24 – Updated: 2026-09-04 19:39
VLAI
EPSS
VEX
Title
Agent receiver certificate confusion allows authentication with a certificate issued for another endpoint
Summary
Improper certificate validation in Checkmk <2.5.0p10 allows a relay and a push agent that share the same UUID to reuse each other's mTLS certificate to authenticate against agent receiver endpoints in either direction, because the endpoints do not verify that the certificate was issued by their own root certificate.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 19:39 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19735 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
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CVE-2026-17548 (GCVE-0-2026-17548)
Vulnerability from cvelistv5 – Published: 2026-08-25 08:35 – Updated: 2026-08-25 19:48
VLAI
EPSS
VEX
Title
Missing authorization for viewing background jobs
Summary
Missing authorization in Checkmk <2.5.0p12, <2.4.0p36, <2.3.0p50 and all 2.2.0 versions allows an authenticated user who knows the ID of a background job to view that job's status and results.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:48 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22115 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p12
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CVE-2026-15576 (GCVE-0-2026-15576)
Vulnerability from cvelistv5 – Published: 2026-08-21 11:10 – Updated: 2026-08-21 11:53
VLAI
EPSS
VEX
Title
Agent receiver accepts mTLS requests without a client certificate
Summary
Improper authentication in the agent receiver of Checkmk <2.5.0p10 allows an unauthenticated remote attacker to bypass mutual TLS client certificate verification of relay endpoints by supplying a fixed placeholder identity in the request URL, resulting in limited impact on integrity and availability. Only the Cloud, Ultimate and Ultimate MT editions are affected, as other editions do not expose relay endpoints.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 11:53 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20174 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
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CVE-2026-7485 (GCVE-0-2026-7485)
Vulnerability from cvelistv5 – Published: 2026-08-20 12:12 – Updated: 2026-08-26 14:16
VLAI
EPSS
VEX
Title
Frozen BI aggregations leak host and service names to unauthorized users
Summary
Incorrect authorization in frozen BI aggregations in Checkmk <2.5.0p2, <2.4.0p29, <2.3.0p47, and all 2.2.0 versions allows an authenticated user with restricted host and service visibility to learn the names and the existence of hosts and services they are not authorized to see.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 13:27 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/16917 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p2
(semver)
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CVE-2026-15227 (GCVE-0-2026-15227)
Vulnerability from cvelistv5 – Published: 2026-07-31 12:21 – Updated: 2026-07-31 19:50
VLAI
EPSS
VEX
Title
Missing Authorization Allows Editing of Foreign Reports
Summary
Missing authorization in Checkmk <2.5.0p10, <2.4.0p35, <2.3.0p49, and 2.2.0 (EOL) allows an authenticated user lacking the "Edit foreign Reports" permission to modify reports owned by other users.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 19:50 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20003 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
(semver)
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