VDB-320654 · CVE-2025-55740 · GHSA-pr72-8fxw-xx22

Anipaleja nginx-defender up to 1.4.x default credentials

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in Anipaleja nginx-defender up to 1.4.x. This issue affects some unknown processing. Such manipulation leads to default credentials. This vulnerability is traded as CVE-2025-55740. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Anipaleja nginx-defender up to 1.4.x. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a default credentials vulnerability. Using CWE to declare the problem leads to CWE-1392. The product uses default credentials (such as passwords or cryptographic keys) for potentially critical functionality. Impacted is confidentiality. CVE summarizes:

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 advisory is available at github.com. This vulnerability is handled as CVE-2025-55740 since 08/15/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 1.5.0 eliminates this vulnerability.

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Productinfo

Type

Web Server

Vendor

Anipaleja

Name

nginx-defender

Version

Website

Product: https://github.com/Anipaleja/nginx-defender/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Default credentials
CWE: CWE-1392
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: nginx-defender 1.5.0

Timelineinfo

08/15/2025 CVE reserved
08/19/2025 +4 days Advisory disclosed
08/19/2025 +0 days VulDB entry created
08/19/2025 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-pr72-8fxw-xx22
Status: Confirmed

CVE: CVE-2025-55740 (🔒)
GCVE (CVE): GCVE-0-2025-55740
GCVE (VulDB): GCVE-100-320654

Entryinfo

Created: 08/19/2025 23:24
Changes: 08/19/2025 23:24 (64)
Complete: 🔍
Cache ID: 216::103