{"id":"CVE-2026-109255","aliases":["DEBIAN-CVE-2026-109255","EUVD-2026-97699","GHSA-782m-c8ch-x5jc","GHSA-hxw3-57rq-3v4m","UBUNTU-CVE-2026-109255"],"status":"published","title":"FreeRDP 3.0.0 before 3.32.0 heap buffer overflow via license_check_stream_length","description":"FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in license_check_stream_length that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVER_LICENSE_REQUEST with a large scopeCount that bypasses length checks, causing out-of-bounds writes leading to denial of service or remote code execution.","severity":{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00498,"percentile":0.43179,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-122"],"published":"2026-10-12T16:04:26Z","modified":"2026-11-04T02:47:15Z","exploits":[{"source":"pocgithub","id":"D7EAD/CVE-2026-109255","title":"D7EAD/CVE-2026-109255","date":"2026-10-22","url":"https://github.com/D7EAD/CVE-2026-109255"}],"fixes":[{"ecosystem":"Debian:14","package":"freerdp3","fixed_in":["3.32.0+dfsg-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"freerdp3","fixed_in":["3.32.0+dfsg-0ubuntu0.24.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"freerdp3","fixed_in":["3.32.0+dfsg-0ubuntu0.26.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"freerdp2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0+dfsg1-1","2.10.0+dfsg1-1.1","2.11.2+dfsg1-1","2.11.2+dfsg1-1.1~exp1","2.11.2+dfsg1-1.1~exp2","2.11.5+dfsg1-1","2.11.7+dfsg1-1","2.11.7+dfsg1-2","2.11.7+dfsg1-3","2.11.7+dfsg1-4","2.11.7+dfsg1-5","2.11.7+dfsg1-6","2.11.7+dfsg1-6~deb12u1"]},{"source":"osv","ecosystem":"Debian:13","package":"freerdp3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.15.0+dfsg-2.1","3.15.0+dfsg-2.1+deb13u1","3.15.0+dfsg-2.1+deb13u2","3.15.0+dfsg-2.1+deb13u3","3.16.0+dfsg-1","3.16.0+dfsg-2","3.17.0+dfsg-1","3.17.1+dfsg-1","3.17.1+dfsg-2","3.17.2+dfsg-1","3.17.2+dfsg-2","3.17.2+dfsg-3","3.18.0+dfsg-1","3.19.0+dfsg-1","3.19.1+dfsg-1","3.20.0+dfsg-1","3.20.2+dfsg-1","3.21.0+dfsg-1","3.22.0+dfsg-1","3.22.0+dfsg-1~bpo13+0","3.22.0+dfsg-1~bpo13+1","3.22.0+dfsg-3","3.23.0+dfsg-1","3.23.0+dfsg-1~bpo13+1","3.24.0+dfsg-1","3.24.0+dfsg-2","3.24.1+dfsg-1","3.24.2+dfsg-1","3.24.2+dfsg-1~bpo13+1","3.25.0+dfsg-1","3.25.0+dfsg-2","3.25.0+dfsg-3","3.25.0+dfsg-4","3.25.0+dfsg-5","3.26.0+dfsg-1","3.26.0+dfsg-1~bpo13+1","3.27.0+dfsg-1","3.27.1+dfsg-1","3.28.0+dfsg-1","3.28.0+dfsg-2","3.29.0+dfsg-1","3.30.0+dfsg-1","3.30.0+dfsg-1~bpo13+1","3.31.0+dfsg-1","3.31.1+dfsg-1","3.31.1+dfsg-1~bpo13+1","3.32.0+dfsg-1","3.32.1+dfsg-1","3.32.1+dfsg-1~bpo13+1","3.32.2+dfsg-1","3.33.0+dfsg-1"]},{"source":"osv","ecosystem":"Debian:14","package":"freerdp3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.32.0+dfsg-1"}]}],"versions":["3.15.0+dfsg-2.1","3.16.0+dfsg-1","3.16.0+dfsg-2","3.17.0+dfsg-1","3.17.1+dfsg-1","3.17.1+dfsg-2","3.17.2+dfsg-1","3.17.2+dfsg-2","3.17.2+dfsg-3","3.18.0+dfsg-1","3.19.0+dfsg-1","3.19.1+dfsg-1","3.20.0+dfsg-1","3.20.2+dfsg-1","3.21.0+dfsg-1","3.22.0+dfsg-1","3.22.0+dfsg-1~bpo13+0","3.22.0+dfsg-1~bpo13+1","3.22.0+dfsg-3","3.23.0+dfsg-1","3.23.0+dfsg-1~bpo13+1","3.24.0+dfsg-1","3.24.0+dfsg-2","3.24.1+dfsg-1","3.24.2+dfsg-1","3.24.2+dfsg-1~bpo13+1","3.25.0+dfsg-1","3.25.0+dfsg-2","3.25.0+dfsg-3","3.25.0+dfsg-4","3.25.0+dfsg-5","3.26.0+dfsg-1","3.26.0+dfsg-1~bpo13+1","3.27.0+dfsg-1","3.27.1+dfsg-1","3.28.0+dfsg-1","3.28.0+dfsg-2","3.29.0+dfsg-1","3.30.0+dfsg-1","3.30.0+dfsg-1~bpo13+1","3.31.0+dfsg-1","3.31.1+dfsg-1","3.31.1+dfsg-1~bpo13+1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"freerdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1","1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.2","1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3","1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"freerdp2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0~git20170725.1.1648deb+dfsg1-1","2.0.0~git20170725.1.1648deb+dfsg1-5","2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu1","2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu2","2.0.0~git20170725.1.1648deb+dfsg1-6","2.0.0~git20170725.1.1648deb+dfsg1-6build1","2.0.0~git20170725.1.1648deb+dfsg1-7","2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1","2.1.1+dfsg1-0ubuntu0.18.04.1","2.2.0+dfsg1-0ubuntu0.18.04.1","2.2.0+dfsg1-0ubuntu0.18.04.2","2.2.0+dfsg1-0ubuntu0.18.04.3","2.2.0+dfsg1-0ubuntu0.18.04.4","2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","2.2.0+dfsg1-0ubuntu0.18.04.4+esm2","2.2.0+dfsg1-0ubuntu0.18.04.4+esm3","2.2.0+dfsg1-0ubuntu0.18.04.4+esm4","2.2.0+dfsg1-0ubuntu0.18.04.4+esm5","2.2.0+dfsg1-0ubuntu0.18.04.4+esm6"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"freerdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1","1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.1","1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"freerdp2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0~git20190204.1.2693389a+dfsg1-1","2.0.0~git20190204.1.2693389a+dfsg1-2","2.0.0~git20190204.1.2693389a+dfsg1-2build1","2.0.0~git20190204.1.2693389a+dfsg1-2build2","2.1.1+dfsg1-0ubuntu0.20.04.1","2.2.0+dfsg1-0ubuntu0.20.04.1","2.2.0+dfsg1-0ubuntu0.20.04.2","2.2.0+dfsg1-0ubuntu0.20.04.3","2.2.0+dfsg1-0ubuntu0.20.04.4","2.2.0+dfsg1-0ubuntu0.20.04.5","2.2.0+dfsg1-0ubuntu0.20.04.6","2.6.1+dfsg1-0ubuntu0.20.04.1","2.6.1+dfsg1-0ubuntu0.20.04.2","2.6.1+dfsg1-0ubuntu0.20.04.2+esm1","2.6.1+dfsg1-0ubuntu0.20.04.2+esm2","2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","2.6.1+dfsg1-0ubuntu0.20.04.2+esm4"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"freerdp2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.0+dfsg1-2build1","2.3.0+dfsg1-2ubuntu1","2.3.0+dfsg1-2ubuntu2","2.4.1+dfsg1-1","2.4.1+dfsg1-1ubuntu1","2.4.1+dfsg1-1ubuntu2","2.5.0+dfsg1-1","2.6.0+dfsg1-1","2.6.1+dfsg1-1","2.6.1+dfsg1-3","2.6.1+dfsg1-3ubuntu1","2.6.1+dfsg1-3ubuntu2","2.6.1+dfsg1-3ubuntu2.1","2.6.1+dfsg1-3ubuntu2.2","2.6.1+dfsg1-3ubuntu2.3","2.6.1+dfsg1-3ubuntu2.4","2.6.1+dfsg1-3ubuntu2.5","2.6.1+dfsg1-3ubuntu2.6","2.6.1+dfsg1-3ubuntu2.7","2.6.1+dfsg1-3ubuntu2.8","2.6.1+dfsg1-3ubuntu2.9","2.6.1+dfsg1-3ubuntu2.10","2.6.1+dfsg1-3ubuntu2.11"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"freerdp3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.32.0+dfsg-0ubuntu0.24.04.1"}]}],"versions":["3.4.0+dfsg1-0ubuntu2","3.4.0+dfsg1-0ubuntu3","3.4.0+dfsg1-0ubuntu4","3.5.0+dfsg1-0ubuntu1","3.5.1+dfsg1-0ubuntu1","3.5.1+dfsg1-0ubuntu1.1","3.5.1+dfsg1-0ubuntu1.2","3.5.1+dfsg1-0ubuntu1.4","3.5.1+dfsg1-0ubuntu1.5","3.5.1+dfsg1-0ubuntu1.6","3.30.0+dfsg-0ubuntu0.24.04.1","3.30.0+dfsg-0ubuntu0.24.04.2","3.31.0+dfsg-0ubuntu0.24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"freerdp2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0+dfsg1-1.1ubuntu1","2.11.2+dfsg1-1","2.11.2+dfsg1-1build1","2.11.2+dfsg1-1build3","2.11.5+dfsg1-1build1","2.11.5+dfsg1-1build2","2.11.5+dfsg1-1ubuntu0.1~esm1","2.11.5+dfsg1-1ubuntu0.1~esm2","2.11.5+dfsg1-1ubuntu0.1~esm3","2.11.5+dfsg1-1ubuntu0.1~esm4","2.11.5+dfsg1-1ubuntu0.1~esm5","2.11.5+dfsg1-1ubuntu0.1~esm6"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"freerdp3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.32.0+dfsg-0ubuntu0.26.04.1"}]}],"versions":["3.16.0+dfsg-2","3.18.0+dfsg-1ubuntu1","3.19.0+dfsg-1","3.19.1+dfsg-1","3.20.0+dfsg-1","3.20.2+dfsg-1","3.21.0+dfsg-1","3.22.0+dfsg-1","3.24.1+dfsg-1ubuntu1","3.24.2+dfsg-1ubuntu1","3.24.2+dfsg-1ubuntu1.1","3.30.0+dfsg-0ubuntu0.26.04.1","3.30.0+dfsg-0ubuntu0.26.04.2","3.31.0+dfsg-0ubuntu0.26.04.1"]}],"products":[{"vendor":"freerdp","product":"freerdp"}],"references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hxw3-57rq-3v4m","tags":["vendor-advisory","exploit","Exploit","Vendor Advisory","advisory","report"]},{"url":"https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-heap-buffer-overflow-via-license-check-stream-length","tags":["third-party-advisory","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109255","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-782m-c8ch-x5jc"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109255.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-109255","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-109255","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-109255","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-109255","title":"FreeRDP 3.0.0 before 3.32.0 heap buffer overflow via license_check_stream_length","description":"FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in license_check_stream_length that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVER_LICENSE_REQUEST with a large scopeCount that bypasses length checks, causing out-of-bounds writes leading to denial of service or remote code execution.","status":"published","published":"2026-10-12T16:04:26.891Z","modified":"2026-10-13T18:03:27.176Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:20:11.24076Z"}],"euvd":[{"id":"EUVD-2026-97699","description":"FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in license_check_stream_length that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVER_LICENSE_REQUEST with a large scopeCount that bypasses length checks, causing out-of-bounds writes leading to denial of service or remote code execution.","status":"published","published":"2026-10-12T16:04:26Z","modified":"2026-10-13T18:03:27Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T17:27:19.128463Z"}],"ghsa":[{"id":"GHSA-782m-c8ch-x5jc","title":"FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in...","description":"FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in license_check_stream_length that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVER_LICENSE_REQUEST with a large scopeCount that bypasses length checks, causing out-of-bounds writes leading to denial of service or remote code execution.","status":"published","published":"2026-10-12T18:31:38Z","modified":"2026-10-12T18:31:47Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/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","level":"medium"},{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"medium"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:13:07.218945Z"}],"nvd":[{"id":"CVE-2026-109255","description":"FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in license_check_stream_length that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVER_LICENSE_REQUEST with a large scopeCount that bypasses length checks, causing out-of-bounds writes leading to denial of service or remote code execution.","status":"published","published":"2026-10-12T17:17:16.987Z","modified":"2026-11-02T20:51:57.343Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/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","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-03T00:02:28.580228Z"}],"osv":[{"id":"CVE-2026-109255","title":"FreeRDP 3.0.0 before 3.32.0 heap buffer overflow via license_check_stream_length","description":"FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in license_check_stream_length that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVER_LICENSE_REQUEST with a large scopeCount that bypasses length checks, causing out-of-bounds writes leading to denial of service or remote code execution.","status":"published","published":"2026-10-12T16:04:26.891Z","modified":"2026-11-04T02:47:15.551831708Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-122"],"updated_at":"2026-11-04T02:53:45.692342Z"},{"id":"DEBIAN-CVE-2026-109255","description":"FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in license_check_stream_length that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVER_LICENSE_REQUEST with a large scopeCount that bypasses length checks, causing out-of-bounds writes leading to denial of service or remote code execution.","status":"published","published":"2026-10-12T17:17:16.987Z","modified":"2026-11-03T10:00:15.793290085Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/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","level":"medium"}],"updated_at":"2026-11-03T10:27:58.933618Z"},{"id":"UBUNTU-CVE-2026-109255","description":"FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in license_check_stream_length that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVER_LICENSE_REQUEST with a large scopeCount that bypasses length checks, causing out-of-bounds writes leading to denial of service or remote code execution.","status":"published","published":"2026-10-12T17:17:00Z","modified":"2026-10-17T12:58:02.344987444Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"medium"},{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:55:59.130573Z"}]}}