THREATPORT/VULNERABILITY/CVE-2020-15903
CRITICAL SEVERITY

CVE-2020-15903

Nagios Xi vulnerability

CVSS
9.8
EPSS
4.8%
EPSS pct
91th
Exploited
No known
An issue was found in Nagios XI before 5.7.3. There is a privilege escalation vulnerability in backend scripts that ran as root where some included files were editable by nagios user. This issue was fixed in version 5.7.3.
Affected vendor
Nagios
Affected product
Nagios Xi
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2020-09-09

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 4.8% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2020-15903

  • Confirm whether Nagios Nagios Xi is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-15903.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-15903

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-15903 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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