{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Dhanesh Kizhakkinan with Mandiant"
        ]
      }
    ],
    "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-2022-21927 HEVC Video Extensions Remote Code Execution Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21927"
      },
      {
        "category": "self",
        "summary": "CVE-2022-21927 HEVC Video Extensions Remote Code Execution Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/2022/msrc_cve-2022-21927.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": "HEVC Video Extensions Remote Code Execution Vulnerability",
    "tracking": {
      "current_release_date": "2022-02-08T08:00:00.000Z",
      "generator": {
        "date": "2025-01-02T18:27:58.941Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2022-21927",
      "initial_release_date": "2022-02-08T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2022-02-08T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c1.0.43421.0",
            "product": {
              "name": "HEVC Video Extension \u003c1.0.43421.0",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "1.0.43421.0",
            "product": {
              "name": "HEVC Video Extension 1.0.43421.0",
              "product_id": "12010"
            }
          }
        ],
        "category": "product_name",
        "name": "HEVC Video Extension"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c1.0.43422.0",
            "product": {
              "name": "HEVC Video Extensions \u003c1.0.43422.0",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "1.0.43422.0",
            "product": {
              "name": "HEVC Video Extensions 1.0.43422.0",
              "product_id": "11808"
            }
          }
        ],
        "category": "product_name",
        "name": "HEVC Video Extensions"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-21927",
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally.\nFor example, when the score indicates that the Attack Vector is Local and User Interaction is Required, this could describe an exploit in which an attacker, through social engineering, convinces a victim to download and open a specially crafted file from a website which leads to a local attack on their computer.",
          "title": "According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?"
        },
        {
          "category": "faq",
          "text": "HEVC Video Extension is available to consumers and HEVC Video Extensions is used by device OEMs.",
          "title": "What is the difference between HEVC Video Extension and HEVC Video Extensions?"
        },
        {
          "category": "faq",
          "text": "An attacker could exploit the vulnerability by convincing a victim to download and open a specially crafted file, which could lead to a crash.",
          "title": "How could an attacker exploit the vulnerability?"
        },
        {
          "category": "faq",
          "text": "The Microsoft Store will automatically update affected customers. Alternatively, customers can get the update immediately; see here for details.\nIt is possible for customers to disable automatic updates for the Microsoft Store. The Microsoft Store will not automatically install this update for those customers. VLSC customers can visit the Volume Licensing Servicing Center to get the update https://www.microsoft.com/Licensing/servicecenter/.\nCustomers using the Microsoft Store for Business and Microsoft Store for Education can get this update through their organizations.",
          "title": "How do I get the updated app?"
        },
        {
          "category": "faq",
          "text": "If your device manufacturer preinstalled this app, package versions 1.0.43421.0 and later contain this update.\nIf you purchased this app from the Microsoft Store, package versions 1.0.41532.0 and later contain this update.\nYou can check the package version in PowerShell:\nGet-AppxPackage -Name Microsoft.HEVCVideoExtension*",
          "title": "How can I check if the update is installed?"
        }
      ],
      "product_status": {
        "fixed": [
          "11808",
          "12010"
        ],
        "known_affected": [
          "1",
          "2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2022-21927 HEVC Video Extensions Remote Code Execution Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21927"
        },
        {
          "category": "self",
          "summary": "CVE-2022-21927 HEVC Video Extensions Remote Code Execution Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21927"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2022-02-08T08:00:00.000Z",
          "details": "1.0.43421.0:Security Update:https://www.microsoft.com/Licensing/servicecenter/",
          "product_ids": [
            "1"
          ],
          "url": "https://www.microsoft.com/Licensing/servicecenter/"
        },
        {
          "category": "vendor_fix",
          "date": "2022-02-08T08:00:00.000Z",
          "details": "1.0.43422.0:Security Update:https://www.microsoft.com/en-US/p/hevc-video-extensions/9nmzlz57r3t7?activetab=pivot:overviewtab",
          "product_ids": [
            "2"
          ],
          "url": "https://www.microsoft.com/en-US/p/hevc-video-extensions/9nmzlz57r3t7?activetab=pivot:overviewtab"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.8,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Exploited:No;Latest Software Release:Exploitation Unlikely;Older Software Release:Exploitation Unlikely"
        }
      ],
      "title": "HEVC Video Extensions Remote Code Execution Vulnerability"
    }
  ]
}