{"id":"CVE-2026-113766","aliases":[],"cve":{"records":[{"id":"CVE-2026-113766","source":"microsoft","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-20T17:21:17.383Z","published":"2026-11-10T18:18:49.032Z","modified":"2026-11-13T18:07:39.245Z"}],"publishers":[{"name":"microsoft","role":"CNA","organizationId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","modified":"2026-11-13T18:07:39.245Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-10T20:19:40.881Z"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-113766","tags":["vendor-advisory","patch"],"source":"microsoft"}],"weaknesses":[{"id":"CWE-1390","description":"CWE-1390: Weak Authentication","source":"microsoft"}],"applicability":[{"source":"microsoft","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*","versionStartIncluding":"10.0.19044.0","versionEndExcluding":"10.0.19044.7846"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x86:*","versionStartIncluding":"10.0.19045.0","versionEndExcluding":"10.0.19045.7846"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*","versionStartIncluding":"10.0.22631.0","versionEndExcluding":"10.0.22631.7711"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*","versionStartIncluding":"10.0.22631.0","versionEndExcluding":"10.0.22631.7711"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*","versionStartIncluding":"10.0.26100.0","versionEndExcluding":"10.0.26100.9974"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*","versionStartIncluding":"10.0.26200.0","versionEndExcluding":"10.0.26200.9974"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:windows_11_version_26h2_for_arm64-based_systems:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.26300.0","versionEndExcluding":"10.0.26300.9974"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.26100.0","versionEndExcluding":"10.0.26100.33822"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.26100.0","versionEndExcluding":"10.0.26100.33822"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:arm64:*","versionStartIncluding":"10.0.28000.0","versionEndExcluding":"10.0.28000.3501"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-10T20:11:31.025410Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Windows Language Experience Service Tampering Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","description":"Weak authentication in Windows Language Experience Service allows an authorized attacker to perform tampering locally.","score":3.3,"severity":"low","published":"2026-11-10T18:18:49.032Z","modified":"2026-11-13T18:07:39.245Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Microsoft","name":"Windows 10 Version 21H2","platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.19044.0","status":"affected","lessThan":"10.0.19044.7846","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"},{"vendor":"Microsoft","name":"Windows 10 Version 22H2","platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.19045.0","status":"affected","lessThan":"10.0.19045.7846","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"},{"vendor":"Microsoft","name":"Windows 11 version 23H2","platforms":["ARM64-based Systems"],"versions":[{"version":"10.0.22631.0","status":"affected","lessThan":"10.0.22631.7711","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"},{"vendor":"Microsoft","name":"Windows 11 Version 23H2","platforms":["x64-based Systems"],"versions":[{"version":"10.0.22631.0","status":"affected","lessThan":"10.0.22631.7711","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"},{"vendor":"Microsoft","name":"Windows 11 Version 24H2","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.9974","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"},{"vendor":"Microsoft","name":"Windows 11 Version 25H2","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.26200.0","status":"affected","lessThan":"10.0.26200.9974","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"},{"vendor":"Microsoft","name":"Windows 11 version 26H1","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.28000.0","status":"affected","lessThan":"10.0.28000.3501","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"},{"vendor":"Microsoft","name":"Windows 11 Version 26H2","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.26300.0","status":"affected","lessThan":"10.0.26300.9974","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"},{"vendor":"Microsoft","name":"Windows Server 2025","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.33822","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"},{"vendor":"Microsoft","name":"Windows Server 2025 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.33822","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"}],"remediation":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-113766"],"sources":[{"name":"CVE","id":"CVE-2026-113766","modified":"2026-11-13T18:07:39.245Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"}],"assessments":[{"source":"microsoft","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C","score":3.3}],"sourceAffected":[],"observedAt":"2026-11-13T18:31:18.440Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T01:45:32.170Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-12T09:35:32.740Z","attemptedAt":"2026-11-12T09:35:32.740Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-12T09:35:32.342Z","attemptedAt":"2026-11-12T09:35:32.342Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-12T09:35:32.053Z","attemptedAt":"2026-11-12T09:35:32.053Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-12T09:35:31.655Z","attemptedAt":"2026-11-12T09:35:31.655Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-121931","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-121931","modified":"Nov 11, 2026, 5:14:12 PM","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C","checkedAt":"2026-11-12T09:35:32.053Z"},{"source":"GitHub Advisory Database","id":"GHSA-63r6-9gfj-q84r","url":"https://github.com/advisories/GHSA-63r6-9gfj-q84r","modified":"2026-11-10T21:32:54Z","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","checkedAt":"2026-11-12T09:35:32.342Z"},{"source":"NVD","id":"CVE-2026-113766","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113766","modified":"2026-11-10T21:18:54.333","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","checkedAt":"2026-11-12T09:35:32.740Z"}],"aiSummary":{"text":"Weak authentication in Windows Language Experience Service allows an authorized attacker to perform tampering locally on affected Windows versions, including Windows 10 Version 21H2 and Windows 11 versions 23H2, 24H2, 25H2, and 26H2. The vulnerability affects specific versions of these operating systems. An attacker needs authorized access to exploit the weakness.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-10T20:41:23.687Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-113766"}]}}