{"schemaVersion":3,"id":"CVE-2026-63117","aliases":["UBUNTU-CVE-2026-63117","DEBIAN-CVE-2026-63117"],"status":"published","duplicateOf":null,"title":null,"description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, an authenticated RDP client can advertise DVI ADPCM with nBlockAlign equal to 8 and nChannels equal to 2 to make the `bs` calculation in rdpsnd_server_select_format in channels/rdpsnd/server/rdpsnd_main.c equal zero. The subsequent out_frames modulo `bs` operation raises SIGFPE and terminates the server-side rdpsnd channel process. This vulnerability fixed in 3.28.0.","dates":{"published":"2026-08-19T17:55:39.015Z","modified":"2026-08-19T18:46:58.088Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00552,"percentile":0.45289,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.163,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00389},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00548,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00552,"percentile":0.45289}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00389,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00548,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00552,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00552,"percentile":0.45289}]},"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-369","name":"Divide By Zero","description":"The product divides a value by zero.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/369.html"}],"affected":[{"vendor":"debian","product":"freerdp2","name":"freerdp2","label":"freerdp2","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/freerdp2","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"debian","product":"freerdp3","name":"freerdp3","label":"freerdp3","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/freerdp3","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 3.28.0+dfsg-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 3.28.0+dfsg-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"freerdp","name":"freerdp","label":"freerdp","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/freerdp","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"freerdp2","name":"freerdp2","label":"freerdp2","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/freerdp2","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"freerdp3","name":"freerdp3","label":"freerdp3","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/freerdp3","purlType":"deb","versions":[{"text":"< 3.30.0+dfsg-0ubuntu0.24.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.30.0+dfsg-0ubuntu0.26.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.30.0+dfsg-0ubuntu0.24.04.1 | < 3.30.0+dfsg-0ubuntu0.26.04.1","eol":null,"hubHref":null},{"vendor":"freerdp","product":"freerdp","name":"freerdp","label":"freerdp","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 3.28.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.28.0","eol":null,"hubHref":"/vendor/freerdp/freerdp"}],"affectedCount":6,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v64m-xxfw-hrv6","label":"github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v64m-xxfw-hrv6","hostname":"github.com","tags":["X Refsource CONFIRM","Vendor Advisory"]},{"url":"https://github.com/FreeRDP/FreeRDP/pull/12980","label":"github.com/FreeRDP/FreeRDP/pull/12980","hostname":"github.com","tags":["X Refsource MISC","Issue Tracking","Patch"]},{"url":"https://github.com/FreeRDP/FreeRDP/commit/b78fc0b138fe8f08a8b102e193ffb32986f4449a","label":"github.com/FreeRDP/FreeRDP/commit/b78fc0b138fe8f08a8b102e193ffb32986f4449a","hostname":"github.com","tags":["X Refsource MISC","Patch"]},{"url":"https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0","label":"github.com/FreeRDP/FreeRDP/releases/tag/3.28.0","hostname":"github.com","tags":["X Refsource MISC","Release Notes"]},{"url":"https://ubuntu.com/security/CVE-2026-63117","label":"ubuntu.com/security/CVE-2026-63117","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63117","label":"www.cve.org/CVERecord?id=CVE-2026-63117","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-63117","label":"security-tracker.debian.org/tracker/CVE-2026-63117","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:11385-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11385-1"]},"timeline":[{"kind":"published","date":"2026-08-19T17:55:39.015Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-08-19T18:46:58.088Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T13:28:37.323Z","stale":false,"partial":false}}