msrc_cve-2025-54126
Vulnerability from csaf_microsoft
Published
2025-07-02 00:00
Modified
2025-09-04 03:22
Summary
WebAssembly Micro Runtime's `--addr-pool` option allows all IPv4 addresses when subnet mask is not specified

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.


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{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
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    "notes": [
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        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2025-54126 WebAssembly Micro Runtime\u0027s `--addr-pool` option allows all IPv4 addresses when subnet mask is not specified - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-54126.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "WebAssembly Micro Runtime\u0027s `--addr-pool` option allows all IPv4 addresses when subnet mask is not specified",
    "tracking": {
      "current_release_date": "2025-09-04T03:22:55.000Z",
      "generator": {
        "date": "2025-10-20T03:36:12.162Z",
        "engine": {
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          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2025-54126",
      "initial_release_date": "2025-07-02T00:00:00.000Z",
      "revision_history": [
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          "date": "2025-09-04T03:22:55.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
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      "status": "final",
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    }
  },
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      {
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              },
              {
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            ],
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          },
          {
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              },
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        ],
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-54126",
      "cwe": {
        "id": "CWE-668",
        "name": "Exposure of Resource to Wrong Sphere"
      },
      "notes": [
        {
          "category": "general",
          "text": "GitHub_M",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
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          "17084-1"
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      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-54126 WebAssembly Micro Runtime\u0027s `--addr-pool` option allows all IPv4 addresses when subnet mask is not specified - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-54126.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-09-04T03:22:55.000Z",
          "details": "3.1.9-5:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
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            "17084-1"
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        {
          "category": "vendor_fix",
          "date": "2025-09-04T03:22:55.000Z",
          "details": "3.0.6-3:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
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            "17086-2"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 5.3,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "17084-4",
            "17086-3",
            "17086-2",
            "17084-1"
          ]
        }
      ],
      "title": "WebAssembly Micro Runtime\u0027s `--addr-pool` option allows all IPv4 addresses when subnet mask is not specified"
    }
  ]
}


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