{"schemaVersion":3,"id":"CVE-2026-109240","aliases":["DEBIAN-CVE-2026-109240","UBUNTU-CVE-2026-109240"],"status":"published","duplicateOf":null,"title":null,"description":"FreeRDP 3.11.0 before 3.32.1 contains a reachable assertion vulnerability in urb_isoch_transfer that allows malicious RDP servers to crash clients by sending unvalidated OutputBufferSize values. Attackers can send a TS_URB_ISOCH_TRANSFER IN-direction request with OutputBufferSize above INT32_MAX over URBDRC, triggering an assertion in libusb_udev_isoch_transfer that terminates the client.","dates":{"published":"2026-10-12T16:04:17.023Z","modified":"2026-10-13T18:00:17.250Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":3.1,"severity":"low","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":2.3,"severity":"low","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":3.1,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":2.3,"severity":"low","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":3.1,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Debian","score":2.3,"severity":"low","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":2.3,"severity":"low","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":3.1,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L","exploitability":4.1,"impact":2.3,"computed":true}]},"epss":{"probability":0.00219,"percentile":0.11617,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-13T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00219,"percentile":0.11617}],"last30":[{"date":"2026-10-13T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00219,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00219,"percentile":0.11617}]},"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-617","name":"Reachable Assertion","description":"The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/617.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":"< 3.32.1+dfsg-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 3.32.1+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":"< 3.32.1+dfsg-0ubuntu0.24.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.32.1+dfsg-0ubuntu0.26.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.32.1+dfsg-0ubuntu0.24.04.1 | < 3.32.1+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":"≥ 3.11.0, < 3.32.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 3.11.0, < 3.32.1","eol":null,"hubHref":"/vendor/freerdp/freerdp"}],"affectedCount":6,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2","label":"github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2","hostname":"github.com","tags":["Vendor Advisory","REPORT"]},{"url":"https://www.vulncheck.com/advisories/freerdp-3.11.0-before-3.32.1-reachable-assertion-dos-via-urb-isoch-transfer","label":"www.vulncheck.com/advisories/…","hostname":"www.vulncheck.com","tags":["Third Party Advisory","REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-109240","label":"security-tracker.debian.org/tracker/CVE-2026-109240","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-109240","label":"ubuntu.com/security/CVE-2026-109240","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-109240","label":"www.cve.org/CVERecord?id=CVE-2026-109240","hostname":"www.cve.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-12T16:04:17.023Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-13T18:00:17.250Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":12,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T23:41:33.768Z","stale":false,"partial":false}}