cve-2026-49795

HIGH CVSS 8.8 opencve
Description

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

Timeline
Published
2026-07-14 17:16 UTC
Last Modified
2026-07-22
CVSS Details

CVSS details not available.

Affected Products

No product information available.

Weaknesses (CWE)
CWE-416
CVSS metrics
Version Base Severity Vector Exploitability Impact Source
3.1 8.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C mitre
3.1 8.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H nvd
3.1 8.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C opencve
References

No references available.

Linked Vulnerabilities

No linked vulnerabilities found.

{
  "cve": "CVE-2026-49795",
  "enrichment": {
    "created": "2026-07-16T06:15:16.273282+00:00",
    "updated": "2026-08-24T17:15:05.463160+00:00",
    "vendors": []
  },
  "epss": {
    "score": 0.00333
  },
  "mitre": {
    "cpes": [
      "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*",
      "cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*",
      "cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*"
    ],
    "created": "2026-07-14T17:05:56.971000+00:00",
    "description": "Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.",
    "metrics": {
      "cvssV2_0": {},
      "cvssV3_0": {},
      "cvssV3_1": {
        "score": 8.8,
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C"
      },
      "cvssV4_0": {}
    },
    "mitre_repo_path": "cves/2026/49xxx/CVE-2026-49795.json",
    "references": [
      "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49795"
    ],
    "title": "Windows Kernel Elevation of Privilege Vulnerability",
    "updated": "2026-09-25T18:21:17.326000+00:00",
    "vendors": [
      "microsoft",
      "microsoft$PRODUCT$windows_10_1809",
      "microsoft$PRODUCT$windows_10_21H2",
      "microsoft$PRODUCT$windows_10_22H2",
      "microsoft$PRODUCT$windows_11_24H2",
      "microsoft$PRODUCT$windows_11_25H2",
      "microsoft$PRODUCT$windows_11_26H1",
      "microsoft$PRODUCT$windows_server_2019",
      "microsoft$PRODUCT$windows_server_2022",
      "microsoft$PRODUCT$windows_server_2025"
    ],
    "weaknesses": [
      "CWE-416"
    ]
  },
  "nvd": {
    "cpes": [
      "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*",
      "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*",
      "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*",
      "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*",
      "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*",
      "cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*"
    ],
    "created": "2026-07-14T17:16:55.377000+00:00",
    "description": "Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.",
    "metrics": {
      "cvssV2_0": {},
      "cvssV3_0": {},
      "cvssV3_1": {
        "score": 8.8,
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
      },
      "cvssV4_0": {}
    },
    "nvd_repo_path": "2026/CVE-2026-49795.json",
    "references": [
      "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49795"
    ],
    "title": null,
    "updated": "2026-07-22T16:17:32.813000+00:00",
    "vendors": [
      "microsoft",
      "microsoft$PRODUCT$windows_10_1809",
      "microsoft$PRODUCT$windows_10_21h2",
      "microsoft$PRODUCT$windows_10_22h2",
      "microsoft$PRODUCT$windows_11_24h2",
      "microsoft$PRODUCT$windows_11_25h2",
      "microsoft$PRODUCT$windows_11_26h1",
      "microsoft$PRODUCT$windows_server_2019",
      "microsoft$PRODUCT$windows_server_2022",
      "microsoft$PRODUCT$windows_server_2025"
    ],
    "weaknesses": [
      "CWE-416"
    ]
  },
  "opencve": {
    "changes": [
      {
        "created": "2026-07-14T17:15:00+00:00",
        "data": [
          {
            "details": {
              "new": "Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.",
              "old": null
            },
            "type": "description"
          },
          {
            "details": {
              "new": "Windows Kernel Elevation of Privilege Vulnerability",
              "old": null
            },
            "type": "title"
          },
          {
            "details": [
              "microsoft",
              "microsoft$PRODUCT$windows_10_1809",
              "microsoft$PRODUCT$windows_10_21H2",
              "microsoft$PRODUCT$windows_10_22H2",
              "microsoft$PRODUCT$windows_11_24H2",
              "microsoft$PRODUCT$windows_11_25H2",
              "microsoft$PRODUCT$windows_11_26H1",
              "microsoft$PRODUCT$windows_server_2019",
              "microsoft$PRODUCT$windows_server_2022",
              "microsoft$PRODUCT$windows_server_2025"
            ],
            "type": "first_time"
          },
          {
            "details": {
              "added": [
                "CWE-416"
              ],
              "removed": []
            },
            "type": "weaknesses"
          },
          {
            "details": {
              "added": [
                "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*",
                "cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*",
                "cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
                "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
                "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*"
              ],
              "removed": []
            },
            "type": "cpes"
          },
          {
            "details": {
              "added": [
                "microsoft",
                "microsoft$PRODUCT$windows_10_1809",
                "microsoft$PRODUCT$windows_10_21H2",
                "microsoft$PRODUCT$windows_10_22H2",
                "microsoft$PRODUCT$windows_11_24H2",
                "microsoft$PRODUCT$windows_11_25H2",
                "microsoft$PRODUCT$windows_11_26H1",
                "microsoft$PRODUCT$windows_server_2019",
                "microsoft$PRODUCT$windows_server_2022",
                "microsoft$PRODUCT$windows_server_2025"
              ],
              "removed": []
            },
            "type": "vendors"
          },
          {
            "details": {
              "added": [
                "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49795"
              ],
              "removed": []
            },
            "type": "references"
          },
          {
            "details": {
              "added": {
                "cvssV3_1": {
                  "score": 8.8,
                  "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C"
                }
              },
              "removed": {},
              "updated": {}
            },
            "type": "metrics"
          }
        ],
        "id": "4b398f4a-cf9f-43f1-b119-2f1c5600a452"
      },
      {
        "created": "2026-07-14T18:30:00+00:00",
        "data": [
          {
            "details": {
              "added": {
                "ssvc": {
                  "options": {
                    "Automatable": "no",
                    "Exploitation": "none",
                    "Technical Impact": "total"
                  },
                  "version": "2.0.3"
                }
              },
              "removed": {},
              "updated": {}
            },
            "type": "metrics"
          }
        ],
        "id": "6e6db8ef-0c70-484b-acd1-900d67f4784d"
      }
    ],
    "cpes": {
      "data": [
        "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
        "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*",
        "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*",
        "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*",
        "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*",
        "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*",
        "cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*",
        "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*",
        "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*",
        "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*",
        "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*",
        "cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*"
      ],
      "providers": [
        "mitre",
        "nvd"
      ]
    },
    "created": {
      "data": "2026-07-14T17:05:56.971000+00:00",
      "provider": "mitre"
    },
    "description": {
      "data": "Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.",
      "provider": "mitre"
    },
    "metrics": {
      "cvssV2_0": {
        "data": {},
        "provider": null
      },
      "cvssV3_0": {
        "data": {},
        "provider": null
      },
      "cvssV3_1": {
        "data": {
          "score": 8.8,
          "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C"
        },
        "provider": "mitre"
      },
      "cvssV4_0": {
        "data": {},
        "provider": null
      },
      "epss": {
        "data": {
          "score": 0.00333
        },
        "provider": "first"
      },
      "kev": {
        "data": {},
        "provider": null
      },
      "ssvc": {
        "data": {
          "options": {
            "Automatable": "no",
            "Exploitation": "none",
            "Technical Impact": "total"
          },
          "version": "2.0.3"
        },
        "provider": "vulnrichment"
      },
      "threat_severity": {
        "data": null,
        "provider": null
      }
    },
    "references": {
      "data": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49795"
      ],
      "providers": [
        "mitre",
        "nvd"
      ]
    },
    "title": {
      "data": "Windows Kernel Elevation of Privilege Vulnerability",
      "provider": "mitre"
    },
    "updated": {
      "data": "2026-07-14T17:56:59.624000+00:00",
      "provider": "mitre"
    },
    "vendors": {
      "data": [
        "microsoft",
        "microsoft$PRODUCT$windows_10_1809",
        "microsoft$PRODUCT$windows_10_21H2",
        "microsoft$PRODUCT$windows_10_21h2",
        "microsoft$PRODUCT$windows_10_22H2",
        "microsoft$PRODUCT$windows_10_22h2",
        "microsoft$PRODUCT$windows_11_24H2",
        "microsoft$PRODUCT$windows_11_24h2",
        "microsoft$PRODUCT$windows_11_25H2",
        "microsoft$PRODUCT$windows_11_25h2",
        "microsoft$PRODUCT$windows_11_26H1",
        "microsoft$PRODUCT$windows_11_26h1",
        "microsoft$PRODUCT$windows_server_2019",
        "microsoft$PRODUCT$windows_server_2022",
        "microsoft$PRODUCT$windows_server_2025"
      ],
      "providers": [
        "mitre",
        "nvd"
      ]
    },
    "weaknesses": {
      "data": [
        "CWE-416"
      ],
      "providers": [
        "mitre",
        "nvd"
      ]
    }
  },
  "vulnrichment": {
    "cpes": [],
    "created": "2026-07-14T17:05:56.971000+00:00",
    "description": "Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.",
    "metrics": {
      "cvssV2_0": {},
      "cvssV3_0": {},
      "cvssV3_1": {},
      "cvssV4_0": {},
      "kev": {},
      "ssvc": {
        "options": {
          "Automatable": "no",
          "Exploitation": "none",
          "Technical Impact": "total"
        },
        "version": "2.0.3"
      }
    },
    "references": [],
    "title": "Windows Kernel Elevation of Privilege Vulnerability",
    "updated": "2026-07-14T17:45:16.539000+00:00",
    "vendors": [],
    "vulnrichment_repo_path": "2026/49xxx/CVE-2026-49795.json",
    "weaknesses": []
  }
}
Enrichment data
EPSS
View JSON Download
CISA KEV
View JSON Download
Aggregated bundle (all enrichments)
View JSON API Download bundle
View JSON API Download JSON