CVE-2025-41702 (GCVE-0-2025-41702)

Vulnerability from cvelistv5 – Published: 2025-08-26 06:10 – Updated: 2025-08-26 19:39
VLAI
Title
egOS WebGUI Hard-Coded JWT Secret Enables Authentication Bypass
Summary
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.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-26 19:37 UTC
CWE
  • CWE-321 - Use of Hard-coded Cryptographic Key
Assigner
CERTVDE CNA
References
Impacted products
Vendor Product Version
Welotec EG400Mk2-D11001-000101 Affected: 0.0.0 , < v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG400Mk2-D11101-000101 Affected: 0.0.0 , < v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG503W Affected: 0.0.0 , < v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG503L Affected: 0.0.0 , < v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG503W_4GB Affected: 0.0.0 , < v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG503L_4GB Affected: 0.0.0 , < v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG503L-G Affected: 0.0.0 , < v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG500Mk2-A11101-000101 Affected: 0.0.0 , < v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG500Mk2-A11001-000101 Affected: 0.0.0 , < v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG500Mk2-B11101-000101 Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG500Mk2-B11001-000101 Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG500Mk2-C11101-000101 Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG500Mk2-C11001-000101 Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG500Mk2-A12011-000101 Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG500Mk2-A11001-000201 Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG500Mk2-A21101-000101 Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG602W Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG602L Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG603W Mk2 Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG603L Mk2 Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG802W Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG804W Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG802W_i7_512GB_DinRail Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG802W_i7_512GB_w/o DinRail Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Welotec EG804W Pro Affected: 0.0.0 , < <v1.7.7 (semver)
Affected: v1.8.0 , < v1.8.2 (semver)
Create a notification for this product.
Show details on NVD website

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                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG503W",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "v1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG503L",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "v1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG503W_4GB",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "v1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG503L_4GB",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "v1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG503L-G",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "v1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG500Mk2-A11101-000101",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "v1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG500Mk2-A11001-000101",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "v1.7.7",
                  "status": "affected",
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                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG500Mk2-B11101-000101",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG500Mk2-B11001-000101",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG500Mk2-C11101-000101",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG500Mk2-C11001-000101",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG500Mk2-A12011-000101",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG500Mk2-A11001-000201",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG500Mk2-A21101-000101",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG602W",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG602L",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG603W Mk2",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG603L Mk2",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG802W",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG804W",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG802W_i7_512GB_DinRail",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "EG802W_i7_512GB_w/o DinRail",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
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                }
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            },
            {
              "defaultStatus": "unaffected",
              "product": "EG804W Pro",
              "vendor": "Welotec",
              "versions": [
                {
                  "lessThan": "\u003cv1.7.7",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                },
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                  "lessThan": "v1.8.2",
                  "status": "affected",
                  "version": "v1.8.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
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              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "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.\u003cbr\u003e"
                }
              ],
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            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
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          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-321",
                  "description": "CWE-321 Use of Hard-coded Cryptographic Key",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-08-26T06:10:57.464Z",
            "orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
            "shortName": "CERTVDE"
          },
          "references": [
            {
              "url": "https://certvde.com/de/advisories/VDE-2025-076"
            }
          ],
          "source": {
            "advisory": "VDE-2025-076",
            "defect": [
              "CERT@VDE#641843"
            ],
            "discovery": "UNKNOWN"
          },
          "title": "egOS WebGUI Hard-Coded JWT Secret Enables Authentication Bypass",
          "x_generator": {
            "engine": "Vulnogram 0.1.0-dev"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
        "assignerShortName": "CERTVDE",
        "cveId": "CVE-2025-41702",
        "datePublished": "2025-08-26T06:10:57.464Z",
        "dateReserved": "2025-04-16T11:17:48.310Z",
        "dateUpdated": "2025-08-26T19:39:00.393Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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