CVE-2025-55740

MEDIUM EPSS 12.9%
Published Aug 19, 202510mo ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Medium
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Published Aug 19, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.5
Exploitability
3.9
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
12.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-1392

References 1

  • github.com https://github.com/Anipaleja/nginx-defender/security/advisories/GHSA-pr72-8fxw-xx22

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.