CVE-2016-9566

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

4.88% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 91.6% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2016-12-15 22:00Z9 YR AGO

Last updated

2024-08-06 02:50Z2 YR AGO

Reserved

2016-11-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-59Improper Link Resolution Before File Access ('Link Following')Base
• CWE-264

Data version

5.1

Document digest

f39e3ee3933357b48cd65e53025544134d9628988553c490b2e3db90d15feec0

• security.gentoo.orgGLSA-201710-20https://security.gentoo.org/glsa/201710-20vendor-advisoryx_refsource_GENTOO
• www.exploit-db.com40921https://www.exploit-db.com/exploits/40921/exploitx_refsource_EXPLOIT-DB
• www.securityfocus.com94919http://www.securityfocus.com/bid/94919vdb-entryx_refsource_BID
• github.comhttps://github.com/NagiosEnterprises/nagioscore/commit/c29557dec91eba2306f5fb11b8da4474ba63f8c4x_refsource_CONFIRM
• rhn.redhat.comRHSA-2017:0258http://rhn.redhat.com/errata/RHSA-2017-0258.htmlvendor-advisoryx_refsource_REDHAT
• security.gentoo.orgGLSA-201612-51https://security.gentoo.org/glsa/201612-51vendor-advisoryx_refsource_GENTOO
• rhn.redhat.comRHSA-2017:0212http://rhn.redhat.com/errata/RHSA-2017-0212.htmlvendor-advisoryx_refsource_REDHAT
• rhn.redhat.comRHSA-2017:0213http://rhn.redhat.com/errata/RHSA-2017-0213.htmlvendor-advisoryx_refsource_REDHAT
• www.nagios.orghttps://www.nagios.org/projects/nagios-core/history/4x/x_refsource_CONFIRM
• security.gentoo.orgGLSA-201702-26https://security.gentoo.org/glsa/201702-26vendor-advisoryx_refsource_GENTOO
• lists.debian.org[debian-lts-announce] 20181224 [SECURITY] [DLA 1615-1] nagios3 security updatehttps://lists.debian.org/debian-lts-announce/2018/12/msg00014.htmlmailing-listx_refsource_MLIST
• rhn.redhat.comRHSA-2017:0259http://rhn.redhat.com/errata/RHSA-2017-0259.htmlvendor-advisoryx_refsource_REDHAT
• www.securitytracker.com1037487http://www.securitytracker.com/id/1037487vdb-entryx_refsource_SECTRACK
• seclists.org20161215 Nagios Core < 4.2.4 Root Privilege Escalation [CVE-2016-9566]http://seclists.org/fulldisclosure/2016/Dec/58mailing-listx_refsource_FULLDISC
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1402869x_refsource_CONFIRM
• legalhackers.comhttps://legalhackers.com/advisories/Nagios-Exploit-Root-PrivEsc-CVE-2016-9566.htmlx_refsource_MISC
• rhn.redhat.comRHSA-2017:0214http://rhn.redhat.com/errata/RHSA-2017-0214.htmlvendor-advisoryx_refsource_REDHAT
• rhn.redhat.comRHSA-2017:0211http://rhn.redhat.com/errata/RHSA-2017-0211.htmlvendor-advisoryx_refsource_REDHAT