TI-2020-17443 Aliases CVE-2020-28909 GHSA-fj4q-mmcw-p43v

Incorrect File Permissions in Nagios Fusion 4.1.8 and earlier allows for Privilege…

MEDIUM 48CWE-732Published 2021-05-24 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Incorrect File Permissions in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation to root via modification of scripts. Low-privileges users are able to modify files that can be executed by sudo.

Why it matters now

EPSS 0.06746 94th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nagios:fusion::::::::	up to 4.1.8	Vulnerable	Nagios

cpe:2.3:a:nagios:fusion:*:*:*:*:*:*:*:* Versions up to 4.1.8 Vulnerable ·Nagios

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-28909
2026-10-03 Alias added: GHSA-fj4q-mmcw-p43v

References

Exploit 1

https://skylightcyber.com/2021/05/20/13-nagios-vulnerabilities-7-will-shock-you/

Advisory 2

TI-2020-17439 Improper Input Validation in Nagios Fusion 4.1.8 and earlier allows an authenticated… CVSS 3.1HIGH 8.8
TI-2020-17435 Command Injection in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation or… CVSS 3.1CRITICAL 9.8
TI-2020-17436 Command Injection in Nagios Fusion 4.1.8 and earlier allows Privilege Escalation from apache to root in cmd_subsys.php. CVSS 3.1CRITICAL 9.8
TI-2020-17442 Command Injection in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation to nagios. CVSS 3.1CRITICAL 9.8
TI-2020-17438 Execution with Unnecessary Privileges in Nagios Fusion 4.1.8 and earlier allows for… CVSS 3.1CRITICAL 9.8
TI-2020-17441 Incorrect SSL certificate validation in Nagios Fusion 4.1.8 and earlier allows for… CVSS 3.1CRITICAL 9.8

See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences