WebGUI Vulnerability in egOS by Unauthenticated Access
CVE-2025-41702

9.8CRITICAL

Key Information:

Vendor

Welotec

Status
Eg400mk2-d11001-000101
Eg400mk2-d11101-000101
Eg503w
Eg503l
Vendor
CVE Published:
26 August 2025

What is CVE-2025-41702?

A security vulnerability in egOS WebGUI exposes the JSON Web Token (JWT) secret key to the default user, enabling unauthenticated attackers to read the key and generate valid HS256 tokens. This oversight allows for an authentication and authorization bypass, potentially compromising the security of the entire system.

Affected Version(s)

EG400Mk2-D11001-000101 0.0.0

EG400Mk2-D11001-000101 v1.8.0

EG400Mk2-D11101-000101 0.0.0

References

https://certvde.com/de/advisories/VDE-2025-076

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-41702 : WebGUI Vulnerability in egOS by Unauthenticated Access