SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-15711

Nagios XI 5.5.6 allows remote authenticated attackers to reset and regenerate the API key of more privileged users.

HIGH 8.8EPSS 36.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 36.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

Nagios XI 5.5.6 allows remote authenticated attackers to reset and regenerate the API key of more privileged users. The attacker can then use the new API key to execute API calls at elevated privileges.

CVSS 3.0
8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
36.01% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-78
Affected
nagios/nagios xi
Source
vulnreport@tenable.com
EPSS trend
0%20%40%21 September 2026: 21.71%22 September 2026: 36.01%27 October 2026: 36.01%21 September 202627 October 2026

EPSS moved from 21.7% on 21 September 2026 to 36.0% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

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