SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-15708

Snoopy 1.0 in Nagios XI 5.5.6 allows remote unauthenticated attackers to execute arbitrary commands via a crafted HTTP request.

EXPLOIT ×2 ✓CRITICAL 9.8EPSS 89.4%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 89.4%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

Snoopy 1.0 in Nagios XI 5.5.6 allows remote unauthenticated attackers to execute arbitrary commands via a crafted HTTP request.

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
89.36% probability · 100th percentile
Public exploits
2 in Exploit-DB · verified · first 23 January 2019
CISA KEV
Not listed
Affected
nagios/nagios xi
Source
vulnreport@tenable.com
EPSS trend
0%45%90%21 September 2026: 83.38%22 September 2026: 89.36%27 October 2026: 89.36%21 September 202627 October 2026

EPSS moved from 83.4% on 21 September 2026 to 89.4% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Public exploits (2)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-47039source ↗Nagios XI 5.5.6 - Magpie_debug.php Root Remote Code Execution (Metasploit)linux · Metasploitremote26 June 2019yes
EDB-46221source ↗Nagios XI 5.5.6 - Remote Code Execution / Privilege Escalationlinux · Chris Lynewebapps23 January 2019no

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.