TI-2020-17441 Aliases CVE-2020-28907 GHSA-7x92-q8cg-wfh6

Incorrect SSL certificate validation in Nagios Fusion 4.1.8 and earlier allows for…

MEDIUM 49CWE-295Published 2021-05-24 · Updated 2024-08-04

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.

Summary

Incorrect SSL certificate validation in Nagios Fusion 4.1.8 and earlier allows for Escalation of Privileges or Code Execution as root via vectors related to download of an untrusted update package in upgrade_to_latest.sh.

Why it matters now

EPSS 0.04495 91st 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-2020-28907
2026-10-03 Alias added: GHSA-7x92-q8cg-wfh6
2026-10-11 EPSS moved to the 90th–95th percentile

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-2020-17443 Incorrect File Permissions in Nagios Fusion 4.1.8 and earlier allows for Privilege… CVSS 3.1HIGH 8.8

See all 18 →

Sources

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