# CVE-2025-41702

## Summary

- **CVE ID:** CVE-2025-41702
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-321
- **Published:** Aug 26, 2025
- **Last Modified:** Mar 12, 2026

## Description

The JWT secret key is embedded in the egOS WebGUI backend and is readable to the default user. An unauthenticated remote attacker can generate valid HS256 tokens and bypass authentication/authorization due to the use of hard-coded cryptographic key.

## Affected Products

- Welotec — EG400Mk2-D11001-000101 (0.0.0)
- Welotec — EG400Mk2-D11001-000101 (v1.8.0)
- Welotec — EG400Mk2-D11101-000101 (0.0.0)
- Welotec — EG400Mk2-D11101-000101 (v1.8.0)
- Welotec — EG503W (0.0.0)
- Welotec — EG503W (v1.8.0)
- Welotec — EG503L (0.0.0)
- Welotec — EG503L (v1.8.0)
- Welotec — EG503W_4GB (0.0.0)
- Welotec — EG503W_4GB (v1.8.0)
- Welotec — EG503L_4GB (0.0.0)
- Welotec — EG503L_4GB (v1.8.0)
- Welotec — EG503L-G (0.0.0)
- Welotec — EG503L-G (v1.8.0)
- Welotec — EG500Mk2-A11101-000101 (0.0.0)
- Welotec — EG500Mk2-A11101-000101 (v1.8.0)
- Welotec — EG500Mk2-A11001-000101 (0.0.0)
- Welotec — EG500Mk2-A11001-000101 (v1.8.0)
- Welotec — EG500Mk2-B11101-000101 (0.0.0)
- Welotec — EG500Mk2-B11101-000101 (v1.8.0)
- Welotec — EG500Mk2-B11001-000101 (0.0.0)
- Welotec — EG500Mk2-B11001-000101 (v1.8.0)
- Welotec — EG500Mk2-C11101-000101 (0.0.0)
- Welotec — EG500Mk2-C11101-000101 (v1.8.0)
- Welotec — EG500Mk2-C11001-000101 (0.0.0)
- Welotec — EG500Mk2-C11001-000101 (v1.8.0)
- Welotec — EG500Mk2-A12011-000101 (0.0.0)
- Welotec — EG500Mk2-A12011-000101 (v1.8.0)
- Welotec — EG500Mk2-A11001-000201 (0.0.0)
- Welotec — EG500Mk2-A11001-000201 (v1.8.0)
- Welotec — EG500Mk2-A21101-000101 (0.0.0)
- Welotec — EG500Mk2-A21101-000101 (v1.8.0)
- Welotec — EG602W (0.0.0)
- Welotec — EG602W (v1.8.0)
- Welotec — EG602L (0.0.0)
- Welotec — EG602L (v1.8.0)
- Welotec — EG603W Mk2 (0.0.0)
- Welotec — EG603W Mk2 (v1.8.0)
- Welotec — EG603L Mk2 (0.0.0)
- Welotec — EG603L Mk2 (v1.8.0)
- Welotec — EG802W (0.0.0)
- Welotec — EG802W (v1.8.0)
- Welotec — EG804W (0.0.0)
- Welotec — EG804W (v1.8.0)
- Welotec — EG802W_i7_512GB_DinRail (0.0.0)
- Welotec — EG802W_i7_512GB_DinRail (v1.8.0)
- Welotec — EG802W_i7_512GB_w/o DinRail (0.0.0)
- Welotec — EG802W_i7_512GB_w/o DinRail (v1.8.0)
- Welotec — EG804W Pro (0.0.0)
- Welotec — EG804W Pro (v1.8.0)

## References

- [CNA](https://certvde.com/de/advisories/VDE-2025-076)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.52%
- **EPSS Percentile:** 42.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._