What’s Vulnerable › Vulnerabilities

CVE-2016-9566

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2016-12-15 · updated 2026-06-17
• Weakness: CWE-59

Description

base/logging.c in Nagios Core before 4.2.4 allows local users with access to an account in the nagios group to gain root privileges via a symlink attack on the log file. NOTE: this can be leveraged by remote attackers using CVE-2016-9565.

Affected products

• Nagios Enterprises nagios: through 4.2.3

References

• http://rhn.redhat.com/errata/RHSA-2017-0211.html
• http://rhn.redhat.com/errata/RHSA-2017-0212.html
• http://rhn.redhat.com/errata/RHSA-2017-0213.html
• http://rhn.redhat.com/errata/RHSA-2017-0214.html
• http://rhn.redhat.com/errata/RHSA-2017-0258.html
• http://rhn.redhat.com/errata/RHSA-2017-0259.html
• http://seclists.org/fulldisclosure/2016/Dec/58
• http://www.securityfocus.com/bid/94919
• http://www.securitytracker.com/id/1037487
• https://bugzilla.redhat.com/show_bug.cgi?id=1402869
• https://github.com/NagiosEnterprises/nagioscore/commit/c29557dec91eba2306f5fb11b8da4474ba63f8c4
• https://legalhackers.com/advisories/Nagios-Exploit-Root-PrivEsc-CVE-2016-9566.html

Get alerted when CVE-2016-9566 or the next vulnerability affects your stack