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Fencer Vulns
high 7.8

CVE-2019-9166 json

Privilege escalation in Nagios XI before 5.5.11 allows local attackers to elevate privileges to root via write access to config.inc.php and…

published 2019-03-28 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-18544

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

Privilege escalation in Nagios XI before 5.5.11 allows local attackers to elevate privileges to root via write access to config.inc.php and import_xiconfig.php.

Patch / fix

  • nagios nagios_xi 5.5.11

Exploit prediction

1.24% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource

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.