CVE-2016-9565: Nagios

Critical severity, CVSS 9.8. EPSS: 22.7% chance of exploitation in the next 30 days.

MagpieRSS, as used in the front-end component in Nagios Core before 4.2.2 might allow remote attackers to read or write to arbitrary files by spoofing a crafted response from the Nagios RSS feed server. NOTE: this vulnerability exists because of an incomplete fix for CVE-2008-4796.

Affected products

• Nagios Nagios: up to and including 4.2.1

Published 2016-12-15. Last modified 2026-06-17.