{"api_version":"1","generated_at":"2026-07-15T00:45:54+00:00","cve":"CVE-2026-50495","urls":{"html":"https://cve.report/CVE-2026-50495","api":"https://cve.report/api/cve/CVE-2026-50495.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-50495","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-50495"},"summary":{"title":"DNS Client Tampering Vulnerability","description":"Improper access control in Microsoft Windows DNS allows an authorized attacker to perform tampering locally.","state":"PUBLISHED","assigner":"microsoft","published_at":"2026-07-14 18:17:56","updated_at":"2026-07-14 20:35:12"},"problem_types":["CWE-284","CWE-284 CWE-284: Improper Access Control"],"metrics":[{"version":"3.1","source":"secure@microsoft.com","type":"Primary","score":"6.1","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"LOW"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"6.1","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L/E:U/RL:O/RC:C","data":{"baseScore":6.1,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L/E:U/RL:O/RC:C","version":"3.1"}}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50495","name":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50495","refsource":"secure@microsoft.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-50495","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50495","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Microsoft","product":"Windows 10 Version 1809","version":"affected 10.0.17763.0 10.0.17763.9020 custom","platforms":["32-bit Systems","x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows 10 Version 21H2","version":"affected 10.0.19044.0 10.0.19044.7548 custom","platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows 10 Version 22H2","version":"affected 10.0.19045.0 10.0.19045.7548 custom","platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows 11 Version 24H2","version":"affected 10.0.26100.0 10.0.26100.8875 custom","platforms":["ARM64-based Systems","x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows 11 Version 25H2","version":"affected 10.0.26200.0 10.0.26200.8875 custom","platforms":["ARM64-based Systems","x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows 11 version 26H1","version":"affected 10.0.28000.0 10.0.28000.2269 custom","platforms":["ARM64-based Systems","x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows Server 2019","version":"affected 10.0.17763.0 10.0.17763.9020 custom","platforms":["x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows Server 2019 (Server Core installation)","version":"affected 10.0.17763.0 10.0.17763.9020 custom","platforms":["x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows Server 2022","version":"affected 10.0.20348.0 10.0.20348.5386 custom","platforms":["x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows Server 2025","version":"affected 10.0.26100.0 10.0.26100.33158 custom","platforms":["x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows Server 2025 (Server Core installation)","version":"affected 10.0.26100.0 10.0.26100.33158 custom","platforms":["x64-based Systems"]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"platforms":["32-bit Systems","x64-based Systems"],"product":"Windows 10 Version 1809","vendor":"Microsoft","versions":[{"lessThan":"10.0.17763.9020","status":"affected","version":"10.0.17763.0","versionType":"custom"}]},{"platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"product":"Windows 10 Version 21H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.19044.7548","status":"affected","version":"10.0.19044.0","versionType":"custom"}]},{"platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"product":"Windows 10 Version 22H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.19045.7548","status":"affected","version":"10.0.19045.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 24H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.8875","status":"affected","version":"10.0.26100.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 25H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.26200.8875","status":"affected","version":"10.0.26200.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 version 26H1","vendor":"Microsoft","versions":[{"lessThan":"10.0.28000.2269","status":"affected","version":"10.0.28000.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2019","vendor":"Microsoft","versions":[{"lessThan":"10.0.17763.9020","status":"affected","version":"10.0.17763.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2019 (Server Core installation)","vendor":"Microsoft","versions":[{"lessThan":"10.0.17763.9020","status":"affected","version":"10.0.17763.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2022","vendor":"Microsoft","versions":[{"lessThan":"10.0.20348.5386","status":"affected","version":"10.0.20348.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2025","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.33158","status":"affected","version":"10.0.26100.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2025 (Server Core installation)","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.33158","status":"affected","version":"10.0.26100.0","versionType":"custom"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*","versionEndExcluding":"10.0.17763.9020","versionStartIncluding":"10.0.17763.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*","versionEndExcluding":"10.0.17763.9020","versionStartIncluding":"10.0.17763.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*","versionEndExcluding":"10.0.17763.9020","versionStartIncluding":"10.0.17763.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*","versionEndExcluding":"10.0.20348.5386","versionStartIncluding":"10.0.20348.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*","versionEndExcluding":"10.0.19044.7548","versionStartIncluding":"10.0.19044.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.19045.7548","versionStartIncluding":"10.0.19045.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionEndExcluding":"10.0.26100.33158","versionStartIncluding":"10.0.26100.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.26200.8875","versionStartIncluding":"10.0.26200.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.26100.8875","versionStartIncluding":"10.0.26100.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionEndExcluding":"10.0.26100.33158","versionStartIncluding":"10.0.26100.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.28000.2269","versionStartIncluding":"10.0.28000.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"datePublic":"2026-07-14T14:00:00.000Z","descriptions":[{"lang":"en-US","value":"Improper access control in Microsoft Windows DNS allows an authorized attacker to perform tampering locally."}],"metrics":[{"cvssV3_1":{"baseScore":6.1,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L/E:U/RL:O/RC:C","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en-US","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-14T19:39:52.658Z","orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","shortName":"microsoft"},"references":[{"name":"DNS Client Tampering Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50495"}],"title":"DNS Client Tampering Vulnerability"}},"cveMetadata":{"assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","assignerShortName":"microsoft","cveId":"CVE-2026-50495","datePublished":"2026-07-14T17:07:47.990Z","dateReserved":"2026-06-04T18:59:53.337Z","dateUpdated":"2026-07-14T19:39:52.658Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-14 18:17:56","lastModifiedDate":"2026-07-14 20:35:12","problem_types":["CWE-284","CWE-284 CWE-284: Improper Access Control"],"metrics":{"cvssMetricV31":[{"source":"secure@microsoft.com","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"LOW"},"exploitabilityScore":1.8,"impactScore":4.2}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"50495","Ordinal":"1","Title":"DNS Client Tampering Vulnerability","CVE":"CVE-2026-50495","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"50495","Ordinal":"1","NoteData":"Improper access control in Microsoft Windows DNS allows an authorized attacker to perform tampering locally.","Type":"Description","Title":"DNS Client Tampering Vulnerability"}]}}}