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Fencer Vulns
high 7.2

CVE-2020-5791 in the critical feed json

Improper neutralization of special elements used in an OS command in Nagios XI 5.7.3 allows a remote, authenticated admin user to execute o…

published 2020-10-20 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-26948

cvss
7.2
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
78.6%
EPSS 78.6% chance of exploitation in 30 days, percentile 99.5%
public exploits
3
Metasploit, Exploit-DB

Summary

Improper neutralization of special elements used in an OS command in Nagios XI 5.7.3 allows a remote, authenticated admin user to execute operating system commands with the privileges of the apache user.

Timeline

  1. First public exploit (Metasploit exploit/linux/http/nagios_xi_mibs_authenticated_rce)
  2. Published

Exploit prediction

78.63% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

Affected products

  • n/a Nagios XI

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.