Medium severity · published Oct 8, 2026
CVE-2026-105331
mk-oracle: Local privilege escalation via malicious Oracle Instant Client
5.2
CVSS
0.1%
EPSS
No
On KEV
Description
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 0% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
Checkmk · Checkmk GmbH
2.5.0 before 2.5.0p10 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105331
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105331
vendor-advisory
https://checkmk.com/werk/22619
More from Checkmk
8.8
CVE-2026-24096
Insufficient permission validation on multiple REST API Quick Setup endpoints
8.6
CVE-2026-14452
Open redirect and XSS via reset_url parameter
8.4
CVE-2025-39663
Cross Site Scripting through compromised remote site
7.8
CVE-2024-47091
Privilege escalation via mk_mysql agent plugin on Windows
7.8
CVE-2025-32919
Privilege Escalation in Windows License plugin for Checkmk Windows Agent