CVE-2016-10089: Nagios 4.3.2 and earlier allows local users to gain root privileges via a hard link attack on the Nagios in...

Security readout for executives and security teams

CVE-2016-10089 is a local privilege escalation in Nagios 4.3.2 and earlier. A user who already has local access to the server could abuse a hard-link issue involving the Nagios init script to gain root privileges. This is not described as remotely exploitable in the provided sources. Exposure is most likely on servers running Nagios 4.3.2 or earlier where local shell users, compromised service accounts, or other low-privileged users exist. Internet exposure alone is not enough based on the sources. Treat this as high priority for shared or multi-user monitoring servers because successful exploitation could give root control. It is lower urgency for isolated systems with no untrusted local access, but still warrants inventory and vendor-supported remediation. Mitigation focus: Identify Nagios deployments and versions across managed servers.; Prioritize systems running Nagios 4.3.2 or earlier.; Check Nagios or distribution vendor guidance for the corrected package..

Prepared

Jun 13, 2026, 06:20 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.