{"id":"CVE-2026-70184","state":"PUBLISHED","title":"Windows Backup Engine Elevation of Privilege Vulnerability","description":"Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to elevate privileges locally.","publishedAt":"2026-10-13T19:01:09.421Z","updatedAt":"2026-10-30T19:11:45.643Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","source":"microsoft"},"assigner":"microsoft","products":["Microsoft Windows 10 Version 21H2","Microsoft Windows 10 Version 22H2","Microsoft Windows 11 version 23H2","Microsoft Windows 11 Version 23H2","Microsoft Windows 11 Version 24H2","Microsoft Windows 11 Version 25H2","Microsoft Windows 11 version 26H1","Microsoft Windows 11 Version 26H2"],"affected":[{"vendor":"Microsoft","product":"Windows 10 Version 21H2","versions":[{"version":"10.0.19044.0","status":"affected","lessThan":"10.0.19044.7807","versionType":"custom"}],"platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 10 Version 22H2","versions":[{"version":"10.0.19045.0","status":"affected","lessThan":"10.0.19045.7807","versionType":"custom"}],"platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 version 23H2","versions":[{"version":"10.0.22631.0","status":"affected","lessThan":"10.0.22631.7652","versionType":"custom"}],"platforms":["ARM64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 Version 23H2","versions":[{"version":"10.0.22631.0","status":"affected","lessThan":"10.0.22631.7652","versionType":"custom"}],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 Version 24H2","versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.9711","versionType":"custom"}],"platforms":["ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 Version 25H2","versions":[{"version":"10.0.26200.0","status":"affected","lessThan":"10.0.26200.9711","versionType":"custom"}],"platforms":["ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 version 26H1","versions":[{"version":"10.0.28000.0","status":"affected","lessThan":"10.0.28000.3231","versionType":"custom"}],"platforms":["ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 Version 26H2","versions":[{"version":"10.0.26300.0","status":"affected","lessThan":"10.0.26300.9711","versionType":"custom"}],"platforms":["ARM64-based Systems","x64-based Systems"]}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70184"],"weaknesses":["CWE-41"],"ingestedAt":"2026-10-30T19:42:04.719Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/70xxx/CVE-2026-70184.json","commit":"91beacf46587178cb335e3399e6db92524d41de0","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-70184","state":"PUBLISHED","datePublished":"2026-10-13T19:01:09.421Z","dateUpdated":"2026-10-30T19:11:45.643Z","assignerShortName":"microsoft","assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateReserved":"2026-08-03T23:48:30.860Z"},"containers":{"cna":{"title":"Windows Backup Engine Elevation of Privilege Vulnerability","descriptions":[{"lang":"en-US","value":"Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to elevate privileges locally."}],"affected":[{"vendor":"Microsoft","product":"Windows 10 Version 21H2","versions":[{"version":"10.0.19044.0","status":"affected","lessThan":"10.0.19044.7807","versionType":"custom"}],"platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 10 Version 22H2","versions":[{"version":"10.0.19045.0","status":"affected","lessThan":"10.0.19045.7807","versionType":"custom"}],"platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 version 23H2","versions":[{"version":"10.0.22631.0","status":"affected","lessThan":"10.0.22631.7652","versionType":"custom"}],"platforms":["ARM64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 Version 23H2","versions":[{"version":"10.0.22631.0","status":"affected","lessThan":"10.0.22631.7652","versionType":"custom"}],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 Version 24H2","versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.9711","versionType":"custom"}],"platforms":["ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 Version 25H2","versions":[{"version":"10.0.26200.0","status":"affected","lessThan":"10.0.26200.9711","versionType":"custom"}],"platforms":["ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 version 26H1","versions":[{"version":"10.0.28000.0","status":"affected","lessThan":"10.0.28000.3231","versionType":"custom"}],"platforms":["ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Windows 11 Version 26H2","versions":[{"version":"10.0.26300.0","status":"affected","lessThan":"10.0.26300.9711","versionType":"custom"}],"platforms":["ARM64-based Systems","x64-based Systems"]}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70184","name":"Windows Backup Engine Elevation of Privilege Vulnerability","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"HIGH","baseScore":7.8,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-41","description":"CWE-41: Improper Resolution of Path Equivalence","lang":"en-US","type":"CWE"}]}],"providerMetadata":{"shortName":"microsoft","orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateUpdated":"2026-10-30T19:11:45.643Z"},"datePublic":"2026-10-13T14:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*","versionStartIncluding":"10.0.19044.0","versionEndExcluding":"10.0.19044.7807"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x86:*","versionStartIncluding":"10.0.19045.0","versionEndExcluding":"10.0.19045.7807"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*","versionStartIncluding":"10.0.22631.0","versionEndExcluding":"10.0.22631.7652"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*","versionStartIncluding":"10.0.22631.0","versionEndExcluding":"10.0.22631.7652"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*","versionStartIncluding":"10.0.26100.0","versionEndExcluding":"10.0.26100.9711"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*","versionStartIncluding":"10.0.26200.0","versionEndExcluding":"10.0.26200.9711"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:windows_11_version_26h2_for_arm64-based_systems:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.26300.0","versionEndExcluding":"10.0.26300.9711"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:arm64:*","versionStartIncluding":"10.0.28000.0","versionEndExcluding":"10.0.28000.3231"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-70184","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-10-13T20:53:18.455243Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-13T20:54:49.140Z"}}]}}}