{"schemaVersion":3,"id":"CVE-2026-42913","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.","dates":{"published":"2026-06-09T17:06:06.158Z","modified":"2026-09-24T13:44:57.887Z","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":0.00466,"percentile":0.3906,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":-0.006999999999999975,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00473},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00466,"percentile":0.3906}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00466,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00466,"percentile":0.3906}]},"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-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","description":"The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/362.html"},{"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_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 server 2022","name":"Windows Server 2022","label":"windows server 2022","ecosystem":null,"cpePart":"a","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":"a","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":13,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42913","label":"msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42913","hostname":"msrc.microsoft.com","tags":["Vendor Advisory","Patch"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-06-09T17:06:06.158Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-24T13:44:57.887Z","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":"2026-10-20T23:01:48.320Z","stale":false,"partial":false}}