CVE-2025-55740

Default Credentials in nginx-defender Configuration Files

Published Aug 19, 2025 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
nginx-defender is a high-performance, enterprise-grade Web Application Firewall (WAF) and threat detection system engineered for modern web infrastructure. This is a configuration vulnerability affecting nginx-defender deployments. Example configuration files
config.yaml and docker-compose.yml contain default credentials (default_password: "change_me_please", GF_SECURITY_ADMIN_PASSWORD=admin123). If users deploy nginx-defender without changing these defaults, attackers with network access could gain administrative control, bypassing security protections. The issue is addressed in v1.5.0 and later.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-25214 Default Credentials in nginx-defender Configuration Files
Github GHSA Github GHSA GHSA-pr72-8fxw-xx22 Default Credentials in nginx-defender Configuration Files
History
Type Values Removed Values Added
First Time appeared Nginx-defender Project
Nginx-defender Project nginx-defender
Vendors & Products Nginx-defender Project
Nginx-defender Project nginx-defender
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description nginx-defender is a high-performance, enterprise-grade Web Application Firewall (WAF) and threat detection system engineered for modern web infrastructure. This is a configuration vulnerability affecting nginx-defender deployments. Example configuration files config.yaml and docker-compose.yml contain default credentials (default_password: "change_me_please", GF_SECURITY_ADMIN_PASSWORD=admin123). If users deploy nginx-defender without changing these defaults, attackers with network access could gain administrative control, bypassing security protections. The issue is addressed in v1.5.0 and later.
Title Default Credentials in nginx-defender Configuration Files
Weaknesses CWE-1392
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 19, 2025, 8:05 PM
Reserved
Aug 14, 2025, 10:31 PM
Status
Deferred
Published
Aug 19, 2025, 8:15 PM
Modified
Jun 17, 2026, 9:42 AM