CVE-2026-52817
HighCVSS 7.0Exploitation Probability (EPSS)
Low risk16th percentile - higher than 16% of all known CVEs
Summary
Linuxfabrik Monitoring Plugins before version 5.1.0 contains a vulnerability in the sudo policy that allows the nagios or icinga account to execute /usr/bin/apt-get as root without argument restrictions. An attacker controlling that account can use the APT::Update::Pre-Invoke option to execute arbitrary commands with root privileges, leading to full host compromise.
Risk Assessment
The risk includes complete system takeover by an attacker who already controls the monitoring account, potentially compromising all data and services on the host.
Recommendation
Upgrade Linuxfabrik Monitoring Plugins to version 5.1.0 or later, which includes the fix restricting apt-get arguments.
Other vulnerabilities in Linuxfabrik Monitoring Plugins
See all- CVE-2026-73973Medium
Vulnerability in Linuxfabrik Monitoring Plugins allows reading arbitrary files via the logfile plugin, which does not confine the path to /var/log. An attacker controlling the monitoring account can read files such as /etc/shadow.
- CVE-2026-67436High
The redfish-* plugins in Linuxfabrik monitoring-plugins up to version 6.0.0 build request URLs by concatenating a base URL with @odata.id links from responses, allowing a malicious or compromised BMC to redirect authenticated Redfish requests and disclose X-Auth-Token or HTTP Basic credentials.
- CVE-2026-67433Medium
A vulnerability in linuxfabrik monitoring-plugins version 6.0.0 allows a local user controlling the plugin account to place a symlink that will be followed by sqlite3.connect() during a root-run log check. The database migration moves a file from /tmp using os.rename().
Original NVD description (English source)
Linuxfabrik Monitoring Plugins provides monitoring plugins for Icinga, Nagios, and related systems. Prior to version 5.1.0, the shipped assets/sudoers/Debian.sudoers policy allowed the nagios or icinga account to execute /usr/bin/apt-get as root without restricting its arguments. An attacker who already controls that monitoring account can supply the APT::Update::Pre-Invoke option to execute an arbitrary command while apt-get runs with root privileges, resulting in a root shell and complete compromise of the host. The vulnerable rule supports the check-plugins/deb-updates/deb-updates plugin, but it authorized arbitrary apt-get argument sequences rather than only the required apt-get update --quiet 2 command. This issue is fixed in version 5.1.0.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS