Vulnerability · Published Oct 30, 2025 · Assigned by VulnCheck

CVE-2020-36867Nagios XI < 5.7.3 Command Injection in Report PDF Download

High 8.7

In plain English

A high-severity OS command injection in XI from Nagios. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities).

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)2.5%top 14.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Nagios XI versions prior to 5.7.3 contain a command injection vulnerability in the report PDF download/export functionality. User-supplied values used in the PDF generation pipeline or the wrapper that invokes offline/pdf helper utilities were insufficiently validated or improperly escaped, allowing an authenticated attacker who can trigger PDF exports to inject shell metacharacters or arguments.

Affected products (as reported)

Vendor	Product	Versions
Nagios	XI	0 – before 5.7.3

Weakness: CWE-78 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://www.nagios.com/changelog/nagios-xi/ release-notes, patch
https://www.vulncheck.com/advisories/nagios-xi-command-injection-in-report-pdf-download third-party-advisory