msrc_cve-2025-29971
Vulnerability from csaf_microsoft
Published
2025-05-13 07:00
Modified
2025-05-16 07:00
Summary
Web Threat Defense (WTD.sys) Denial of Service Vulnerability

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.
Customer Action
Required. The vulnerability documented by this CVE requires customer action to resolve.


To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Vladimir Lagunov with \u003ca href=\"https://jetbrains.com/\"\u003eJetBrains\u003c/a\u003e"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "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"
      },
      {
        "category": "general",
        "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2025-29971 Web Threat Defense (WTD.sys) Denial of Service Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29971"
      },
      {
        "category": "self",
        "summary": "CVE-2025-29971 Web Threat Defense (WTD.sys) Denial of Service Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-29971.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
      },
      {
        "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": "Web Threat Defense (WTD.sys) Denial of Service Vulnerability",
    "tracking": {
      "current_release_date": "2025-05-16T07:00:00.000Z",
      "generator": {
        "date": "2025-07-15T01:10:58.449Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2025-29971",
      "initial_release_date": "2025-05-13T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2025-05-13T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2025-05-16T07:00:00.000Z",
          "legacy_version": "2",
          "number": "2",
          "summary": "To comprehensively address CVE-2025-29971, Micrsoft has released HotPatch KB5061258 for Windows 11 Version 24H2 for x64-based Systems and Windows 11 Version 24H2 for ARM64-based Systems. Customers running these versions of Windows and who install the HotPatch updates should install KB5061258 to be protected from this vulnerability."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c10.0.22621.5335",
            "product": {
              "name": "Windows 11 Version 22H2 for ARM64-based Systems \u003c10.0.22621.5335",
              "product_id": "6"
            }
          },
          {
            "category": "product_version",
            "name": "10.0.22621.5335",
            "product": {
              "name": "Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.5335",
              "product_id": "12085"
            }
          }
        ],
        "category": "product_name",
        "name": "Windows 11 Version 22H2 for ARM64-based Systems"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c10.0.22621.5335",
            "product": {
              "name": "Windows 11 Version 22H2 for x64-based Systems \u003c10.0.22621.5335",
              "product_id": "5"
            }
          },
          {
            "category": "product_version",
            "name": "10.0.22621.5335",
            "product": {
              "name": "Windows 11 Version 22H2 for x64-based Systems 10.0.22621.5335",
              "product_id": "12086"
            }
          }
        ],
        "category": "product_name",
        "name": "Windows 11 Version 22H2 for x64-based Systems"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c10.0.22631.5335",
            "product": {
              "name": "Windows 11 Version 23H2 for ARM64-based Systems \u003c10.0.22631.5335",
              "product_id": "4"
            }
          },
          {
            "category": "product_version",
            "name": "10.0.22631.5335",
            "product": {
              "name": "Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.5335",
              "product_id": "12242"
            }
          }
        ],
        "category": "product_name",
        "name": "Windows 11 Version 23H2 for ARM64-based Systems"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c10.0.22631.5335",
            "product": {
              "name": "Windows 11 Version 23H2 for x64-based Systems \u003c10.0.22631.5335",
              "product_id": "3"
            }
          },
          {
            "category": "product_version",
            "name": "10.0.22631.5335",
            "product": {
              "name": "Windows 11 Version 23H2 for x64-based Systems 10.0.22631.5335",
              "product_id": "12243"
            }
          }
        ],
        "category": "product_name",
        "name": "Windows 11 Version 23H2 for x64-based Systems"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c10.0.26100.4061",
            "product": {
              "name": "Windows 11 Version 24H2 for ARM64-based Systems \u003c10.0.26100.4061",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "10.0.26100.4061",
            "product": {
              "name": "Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.4061",
              "product_id": "12389"
            }
          }
        ],
        "category": "product_name",
        "name": "Windows 11 Version 24H2 for ARM64-based Systems"
      },
      {
        "branches": [
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            "category": "product_version_range",
            "name": "\u003c10.0.26100.4061",
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              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "10.0.26100.4061",
            "product": {
              "name": "Windows 11 Version 24H2 for x64-based Systems 10.0.26100.4061",
              "product_id": "12390"
            }
          }
        ],
        "category": "product_name",
        "name": "Windows 11 Version 24H2 for x64-based Systems"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-29971",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "12085",
          "12086",
          "12242",
          "12243",
          "12389",
          "12390"
        ],
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5",
          "6"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-29971 Web Threat Defense (WTD.sys) Denial of Service Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29971"
        },
        {
          "category": "self",
          "summary": "CVE-2025-29971 Web Threat Defense (WTD.sys) Denial of Service Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-29971.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-05-13T07:00:00.000Z",
          "details": "10.0.22621.5335:Security Update:https://support.microsoft.com/help/5058405",
          "product_ids": [
            "6",
            "5"
          ],
          "url": "https://support.microsoft.com/help/5058405"
        },
        {
          "category": "vendor_fix",
          "date": "2025-05-13T07:00:00.000Z",
          "details": "10.0.22631.5335:Security Update:https://support.microsoft.com/help/5058405",
          "product_ids": [
            "4",
            "3"
          ],
          "url": "https://support.microsoft.com/help/5058405"
        },
        {
          "category": "vendor_fix",
          "date": "2025-05-13T07:00:00.000Z",
          "details": "10.0.26100.4061:Security Update:https://support.microsoft.com/help/5058411",
          "product_ids": [
            "2",
            "1"
          ],
          "url": "https://support.microsoft.com/help/5058411"
        },
        {
          "category": "vendor_fix",
          "date": "2025-05-13T07:00:00.000Z",
          "details": "10.0.26100.3983:Security HotPatch Update:https://support.microsoft.com/help/5061258",
          "product_ids": [
            "2",
            "1"
          ],
          "url": "https://support.microsoft.com/help/5061258"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.5,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Denial of Service"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely"
        }
      ],
      "title": "Web Threat Defense (WTD.sys) Denial of Service Vulnerability"
    }
  ]
}


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