{"schemaVersion":3,"id":"CVE-2026-44801","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.","dates":{"published":"2026-06-09T17:06:24.191Z","modified":"2026-09-24T13:45:13.174Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00608,"percentile":0.48143,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.147,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00461},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00608,"percentile":0.48143}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00461,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00608,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00608,"percentile":0.48143}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-416","name":"Use After Free","description":"The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","type":"weakness","status":"Stable","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/416.html"},{"id":"CWE-787","name":"Out-of-bounds Write","description":"The product writes data past the end, or before the beginning, of the intended buffer.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/787.html"}],"affected":[{"vendor":"microsoft","product":"remote_desktop_client","name":"remote desktop client","label":"remote_desktop_client","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.2.7214","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.2.7214","eol":null,"hubHref":"/vendor/microsoft/remote_desktop_client"},{"vendor":"microsoft","product":"remote desktop client for windows desktop","name":"Remote Desktop client for Windows Desktop","label":"remote desktop client for windows desktop","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.2.0.0, < 1.2.7214.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.2.0.0, < 1.2.7214.0","eol":null,"hubHref":"/vendor/microsoft/remote_desktop_client_for_windows_desktop"},{"vendor":"microsoft","product":"windows_10_1607","name":"windows 10 1607","label":"windows_10_1607","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 10.0.14393.9234","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 10.0.14393.9234","eol":null,"hubHref":"/vendor/microsoft/windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809","name":"windows 10 1809","label":"windows_10_1809","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 10.0.17763.8880","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 10.0.17763.8880","eol":null,"hubHref":"/vendor/microsoft/windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2","name":"windows 10 21h2","label":"windows_10_21h2","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 10.0.19044.7417","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 10.0.19044.7417","eol":null,"hubHref":"/vendor/microsoft/windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2","name":"windows 10 22h2","label":"windows_10_22h2","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 10.0.19045.7417","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 10.0.19045.7417","eol":null,"hubHref":"/vendor/microsoft/windows_10_22h2"},{"vendor":"microsoft","product":"windows 10 version 1607","name":"Windows 10 Version 1607","label":"windows 10 version 1607","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.14393.0, < 10.0.14393.9234","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.14393.0, < 10.0.14393.9234","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_1607"},{"vendor":"microsoft","product":"windows 10 version 1809","name":"Windows 10 Version 1809","label":"windows 10 version 1809","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.17763.0, < 10.0.17763.8880","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.17763.0, < 10.0.17763.8880","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_1809"},{"vendor":"microsoft","product":"windows 10 version 21h2","name":"Windows 10 Version 21H2","label":"windows 10 version 21h2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.19044.0, < 10.0.19044.7417","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.19044.0, < 10.0.19044.7417","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2","name":"Windows 10 Version 22H2","label":"windows 10 version 22h2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.19045.0, < 10.0.19045.7417","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.19045.0, < 10.0.19045.7417","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_22h2"},{"vendor":"microsoft","product":"windows_11_23h2","name":"windows 11 23h2","label":"windows_11_23h2","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 10.0.22631.7219","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 10.0.22631.7219","eol":null,"hubHref":"/vendor/microsoft/windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2","name":"windows 11 24h2","label":"windows_11_24h2","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 10.0.26100.8655","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 10.0.26100.8655","eol":null,"hubHref":"/vendor/microsoft/windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2","name":"windows 11 25h2","label":"windows_11_25h2","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 10.0.26200.8655","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 10.0.26200.8655","eol":null,"hubHref":"/vendor/microsoft/windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1","name":"windows 11 26h1","label":"windows_11_26h1","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 10.0.28000.2269","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 10.0.28000.2269","eol":null,"hubHref":"/vendor/microsoft/windows_11_26h1"},{"vendor":"microsoft","product":"windows 11 version 23h2","name":"Windows 11 version 23H2","label":"windows 11 version 23h2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.22631.0, < 10.0.22631.7219","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.22631.0, < 10.0.22631.7219","eol":null,"hubHref":"/vendor/microsoft/windows_11_version_23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2","name":"Windows 11 Version 24H2","label":"windows 11 version 24h2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.26100.0, < 10.0.26100.8655","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.26100.0, < 10.0.26100.8655","eol":null,"hubHref":"/vendor/microsoft/windows_11_version_24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2","name":"Windows 11 Version 25H2","label":"windows 11 version 25h2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.26200.0, < 10.0.26200.8655","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.26200.0, < 10.0.26200.8655","eol":null,"hubHref":"/vendor/microsoft/windows_11_version_25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1","name":"Windows 11 version 26H1","label":"windows 11 version 26h1","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.28000.0, < 10.0.28000.2269","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.28000.0, < 10.0.28000.2269","eol":null,"hubHref":"/vendor/microsoft/windows_11_version_26h1"},{"vendor":"microsoft","product":"windows_app","name":"windows app","label":"windows_app","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2.0.1193.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.0.1193.0","eol":null,"hubHref":"/vendor/microsoft/windows_app"},{"vendor":"microsoft","product":"windows app client for windows desktop","name":"Windows App Client for Windows Desktop","label":"windows app client for windows desktop","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.00, < 2.0.1193.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.00, < 2.0.1193.0","eol":null,"hubHref":"/vendor/microsoft/windows_app_client_for_windows_desktop"},{"vendor":"microsoft","product":"windows_server_2012","name":"windows server 2012","label":"windows_server_2012","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 6.2.9200.0, < 6.2.9200.26132","noFixRecorded":false,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null},{"text":"r2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 6.2.9200.0, < 6.2.9200.26132 | na | r2","eol":null,"hubHref":"/vendor/microsoft/windows_server_2012"},{"vendor":"microsoft","product":"windows server 2012 r2","name":"Windows Server 2012 R2","label":"windows server 2012 r2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 6.3.9600.0, < 6.3.9600.23228","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 6.3.9600.0, < 6.3.9600.23228","eol":null,"hubHref":"/vendor/microsoft/windows_server_2012_r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)","name":"Windows Server 2012 R2 (Server Core installation)","label":"windows server 2012 r2 (server core installation)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 6.3.9600.0, < 6.3.9600.23228","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 6.3.9600.0, < 6.3.9600.23228","eol":null,"hubHref":"/vendor/microsoft/windows_server_2012_r2_server_core_installation"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)","name":"Windows Server 2012 (Server Core installation)","label":"windows server 2012 (server core installation)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 6.2.9200.0, < 6.2.9200.26132","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 6.2.9200.0, < 6.2.9200.26132","eol":null,"hubHref":"/vendor/microsoft/windows_server_2012_server_core_installation"},{"vendor":"microsoft","product":"windows_server_2016","name":"windows server 2016","label":"windows_server_2016","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.14393.0, < 10.0.14393.9234","noFixRecorded":false,"fixedIn":null},{"text":"< 10.0.14393.9234","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.14393.0, < 10.0.14393.9234 | < 10.0.14393.9234","eol":null,"hubHref":"/vendor/microsoft/windows_server_2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)","name":"Windows Server 2016 (Server Core installation)","label":"windows server 2016 (server core installation)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.14393.0, < 10.0.14393.9234","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.14393.0, < 10.0.14393.9234","eol":null,"hubHref":"/vendor/microsoft/windows_server_2016_server_core_installation"},{"vendor":"microsoft","product":"windows_server_2019","name":"windows server 2019","label":"windows_server_2019","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.17763.0, < 10.0.17763.8880","noFixRecorded":false,"fixedIn":null},{"text":"< 10.0.17763.8880","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.17763.0, < 10.0.17763.8880 | < 10.0.17763.8880","eol":null,"hubHref":"/vendor/microsoft/windows_server_2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)","name":"Windows Server 2019 (Server Core installation)","label":"windows server 2019 (server core installation)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.17763.0, < 10.0.17763.8880","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.17763.0, < 10.0.17763.8880","eol":null,"hubHref":"/vendor/microsoft/windows_server_2019_server_core_installation"},{"vendor":"microsoft","product":"windows_server_2022","name":"windows server 2022","label":"windows_server_2022","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.20348.0, < 10.0.20348.5256","noFixRecorded":false,"fixedIn":null},{"text":"< 10.0.20348.5256","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.20348.0, < 10.0.20348.5256 | < 10.0.20348.5256","eol":null,"hubHref":"/vendor/microsoft/windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025","name":"windows server 2025","label":"windows_server_2025","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.26100.0, < 10.0.26100.32995","noFixRecorded":false,"fixedIn":null},{"text":"< 10.0.26100.32995","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.26100.0, < 10.0.26100.32995 | < 10.0.26100.32995","eol":null,"hubHref":"/vendor/microsoft/windows_server_2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)","name":"Windows Server 2025 (Server Core installation)","label":"windows server 2025 (server core installation)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.26100.0, < 10.0.26100.32995","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.26100.0, < 10.0.26100.32995","eol":null,"hubHref":"/vendor/microsoft/windows_server_2025_server_core_installation"}],"affectedCount":31,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44801","label":"msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44801","hostname":"msrc.microsoft.com","tags":["Vendor Advisory","Patch"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-06-09T17:06:24.191Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-24T13:45:13.174Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T16:13:54.156Z","stale":false,"partial":false}}