{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Anonymous"
        ]
      }
    ],
    "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-2025-21264 Visual Studio Code Security Feature Bypass Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21264"
      },
      {
        "category": "self",
        "summary": "CVE-2025-21264 Visual Studio Code Security Feature Bypass Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-21264.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": "Visual Studio Code Security Feature Bypass Vulnerability",
    "tracking": {
      "current_release_date": "2025-06-17T07:00:00.000Z",
      "generator": {
        "date": "2025-07-15T01:10:58.631Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2025-21264",
      "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": "2025-06-17T07:00:00.000Z",
          "legacy_version": "2",
          "number": "2",
          "summary": "In the Security Updates Table, added Microsoft Visual Studio CoPilot Chat Extension as it is also affected by this vulnerability. Microsoft recommends that customers install the update to be fully protected from the vulnerability."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c1.100.1",
            "product": {
              "name": "Visual Studio Code \u003c1.100.1",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "1.100.1",
            "product": {
              "name": "Visual Studio Code 1.100.1",
              "product_id": "11622"
            }
          }
        ],
        "category": "product_name",
        "name": "Visual Studio Code"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c0.27.2",
            "product": {
              "name": "Microsoft Visual Studio CoPilot Chat Extension \u003c0.27.2",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "0.27.2",
            "product": {
              "name": "Microsoft Visual Studio CoPilot Chat Extension 0.27.2",
              "product_id": "16782"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Visual Studio CoPilot Chat Extension"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-21264",
      "cwe": {
        "id": "CWE-552",
        "name": "Files or Directories Accessible to External Parties"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploited this vulnerability could view sensitive information, a token in this scenario (Confidentiality), and make some changes to disclosed information (Integrity), but they would not be able to affect Availability.",
          "title": "According to the CVSS metrics, successful exploitation of this vulnerability could lead to a high loss of confidentiality (C:H), and some loss of integrity (I:L) and no loss of availability (A:N). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploited this vulnerability could bypass the Trusted Domain Service.",
          "title": "What kind of security feature could be bypassed by successfully exploiting this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "11622",
          "16782"
        ],
        "known_affected": [
          "1",
          "2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-21264 Visual Studio Code Security Feature Bypass Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21264"
        },
        {
          "category": "self",
          "summary": "CVE-2025-21264 Visual Studio Code Security Feature Bypass Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-21264.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-05-13T07:00:00.000Z",
          "details": "1.100.1:Security Update:https://code.visualstudio.com/updates/v1_100",
          "product_ids": [
            "2"
          ],
          "url": "https://code.visualstudio.com/updates/v1_100"
        },
        {
          "category": "vendor_fix",
          "date": "2025-05-13T07:00:00.000Z",
          "details": "0.27.2:Security Update:https://github.com/microsoft/vscode/",
          "product_ids": [
            "1"
          ],
          "url": "https://github.com/microsoft/vscode/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "CHANGED",
            "temporalScore": 6.2,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Security Feature Bypass"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Visual Studio Code Security Feature Bypass Vulnerability"
    }
  ]
}