CVE-2025-55740CWE-1392

Default Credentials in nginx-defender Configuration Files

Medium · published August 19, 2025

CVSS v3.1
6.5
EPSS
0%
Percentile
14.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00240 · 14.2th percentile
Weakness
CWE-1392 · Use of Default Credentials
Published
2025-08-19T19:52Z
EPSS history
Timeline
  • 19 AUG 19:52Z
    Default Credentials in nginx-defender Configuration Files
    cvelistv5