CVE-2016-9566
Summary
| CVE | CVE-2016-9566 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-12-15 22:59:00 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.0 7.8 HIGH from [email protected]
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.086020000 probability, percentile 0.924700000 (date 2026-05-11)
Problem Types: CWE-59 | CWE-264 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 7.8 | HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
CVSS v3.0 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
CompleteIntegrity
CompleteAvailability
CompleteAV:L/AC:L/Au:N/C:C/I:C/A:C
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Nagios Core 4.x Version History - Nagios | af854a3a-2127-422b-91ae-364da2661108 | www.nagios.org | Vendor Advisory |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | |
| Nagios < 4.2.4 - Local Privilege Escalation - Linux local Exploit | af854a3a-2127-422b-91ae-364da2661108 | www.exploit-db.com | |
| Full Disclosure: Nagios Core < 4.2.4 Root Privilege Escalation [CVE-2016-9566] | af854a3a-2127-422b-91ae-364da2661108 | seclists.org | Mailing List, Third Party Advisory |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | |
| Nagios 'nagios.log' File Permissions Error Lets Local Users Obtain Root Privileges - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| Nagios-Exploit-Root-PrivEsc-CVE-2016-9566 | af854a3a-2127-422b-91ae-364da2661108 | legalhackers.com | Exploit, Third Party Advisory |
| Nagios: Multiple vulnerabilities (GLSA 201702-26) — Gentoo Security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| Bug 1402869 – CVE-2016-9566 nagios: Privilege escalation issue | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Issue Tracking |
| [SECURITY] [DLA 1615-1] nagios3 security update | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | |
| Merge branch 'maint' · NagiosEnterprises/nagioscore@c29557d · GitHub | af854a3a-2127-422b-91ae-364da2661108 | github.com | Issue Tracking, Patch |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | |
| Icinga: Privilege escalation (GLSA 201612-51) — Gentoo security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| Nagios: Multiple vulnerabilities (GLSA 201710-20) — Gentoo security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| Nagios CVE-2016-9566 Local Privilege Escalation Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.