{"id":"CVE-2026-109677","aliases":["CLSA-2026-1792805697","CLSA-2026-1792808931","DEBIAN-CVE-2026-109677","EUVD-2026-98699","GHSA-8m97-wwx3-r8vj","GHSA-fwx5-6r67-r722","UBUNTU-CVE-2026-109677"],"status":"published","title":"FreeRDP 2.0.0-beta1 before 3.28.0 Out-of-Bounds Read via LocateCardsByATRA Handler","description":"FreeRDP from 2.0.0-beta1 before 3.28.0 contains an out-of-bounds read vulnerability in smartcard_LocateCardsByATRA_Call because the ATR pattern cbAtr byte count is not capped. Malicious RDP servers can send crafted ATR mask arrays to use query timing as an oracle, leaking heap memory bit-by-bit to defeat ASLR and aid RCE exploits.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00348,"percentile":0.2878,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2026-10-13T13:27:06Z","modified":"2026-11-04T07:04:24Z","fixes":[{"ecosystem":"Debian:14","package":"freerdp3","fixed_in":["3.28.0+dfsg-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"freerdp3","fixed_in":["3.30.0+dfsg-0ubuntu0.24.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"freerdp3","fixed_in":["3.30.0+dfsg-0ubuntu0.26.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"TuxCare:OracleLinux:7","package":"freerdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-5.0.9.el7_9.tuxcare.els8"}]}],"bundled":6},{"source":"osv","ecosystem":"TuxCare:OracleLinux:7","package":"freerdp-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-5.0.9.el7_9.tuxcare.els8"}]}],"bundled":6},{"source":"osv","ecosystem":"TuxCare:OracleLinux:7","package":"freerdp-libs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-5.0.9.el7_9.tuxcare.els8"}]}],"bundled":6},{"source":"osv","ecosystem":"TuxCare:OracleLinux:7","package":"libwinpr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-5.0.9.el7_9.tuxcare.els8"}]}],"bundled":6},{"source":"osv","ecosystem":"TuxCare:OracleLinux:7","package":"libwinpr-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-5.0.9.el7_9.tuxcare.els8"}]}],"bundled":6},{"source":"osv","ecosystem":"TuxCare:RHEL:7","package":"freerdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-5.0.9.el7_9.tuxcare.els8"}]}],"bundled":6},{"source":"osv","ecosystem":"TuxCare:RHEL:7","package":"freerdp-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-5.0.9.el7_9.tuxcare.els8"}]}],"bundled":6},{"source":"osv","ecosystem":"TuxCare:RHEL:7","package":"freerdp-libs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-5.0.9.el7_9.tuxcare.els8"}]}],"bundled":6},{"source":"osv","ecosystem":"TuxCare:RHEL:7","package":"libwinpr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-5.0.9.el7_9.tuxcare.els8"}]}],"bundled":6},{"source":"osv","ecosystem":"TuxCare:RHEL:7","package":"libwinpr-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-5.0.9.el7_9.tuxcare.els8"}]}],"bundled":6},{"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":"3.28.0+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"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"freerdp","ranges":[{"type":"ECOSYSTEM","events":[{"intro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Advisory","advisory","report"]},{"url":"https://github.com/FreeRDP/FreeRDP/commit/ececc5cbd0646ef012ca178322e6ef922a11f0c1","tags":["patch","Patch","fix","report"]},{"url":"https://www.vulncheck.com/advisories/freerdp-2.0.0-beta1-before-3.28.0-out-of-bounds-read-via-locatecardsbyatra-handler","tags":["third-party-advisory","Patch","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109677","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-fwx5-6r67-r722"},{"url":"https://errata.tuxcare.com/els_os/oraclelinux7els/CLSA-2026-1792805697.html","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109244","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109257","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111377","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111880","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/rhel7els/CLSA-2026-1792808931.html","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109677.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-109677","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-109677","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-109677","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-109677","title":"FreeRDP 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Malicious RDP servers can send crafted ATR mask arrays to use query timing as an oracle, leaking heap memory bit-by-bit to defeat ASLR and aid RCE exploits.","status":"published","published":"2026-10-13T14:17:30.897Z","modified":"2026-11-02T20:52:46.08Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/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":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-03T00:02:28.580228Z"}],"osv":[{"id":"CVE-2026-109677","title":"FreeRDP 2.0.0-beta1 before 3.28.0 Out-of-Bounds Read via LocateCardsByATRA Handler","description":"FreeRDP from 2.0.0-beta1 before 3.28.0 contains an out-of-bounds read vulnerability in smartcard_LocateCardsByATRA_Call because the ATR pattern cbAtr byte count is not capped. Malicious RDP servers can send crafted ATR mask arrays to use query timing as an oracle, leaking heap memory bit-by-bit to defeat ASLR and aid RCE exploits.","status":"published","published":"2026-10-13T13:27:06.288Z","modified":"2026-11-04T07:04:24.550607897Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-04T07:32:23.735279Z"},{"id":"DEBIAN-CVE-2026-109677","description":"FreeRDP from 2.0.0-beta1 before 3.28.0 contains an out-of-bounds read vulnerability in smartcard_LocateCardsByATRA_Call because the ATR pattern cbAtr byte count is not capped. Malicious RDP servers can send crafted ATR mask arrays to use query timing as an oracle, leaking heap memory bit-by-bit to defeat ASLR and aid RCE exploits.","status":"published","published":"2026-10-13T14:17:30.897Z","modified":"2026-11-03T10:00:15.892857837Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/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":"high"}],"updated_at":"2026-11-03T10:27:58.933618Z"},{"id":"UBUNTU-CVE-2026-109677","description":"FreeRDP from 2.0.0-beta1 before 3.28.0 contains an out-of-bounds read vulnerability in smartcard_LocateCardsByATRA_Call because the ATR pattern cbAtr byte count is not capped. Malicious RDP servers can send crafted ATR mask arrays to use query timing as an oracle, leaking heap memory bit-by-bit to defeat ASLR and aid RCE exploits.","status":"published","published":"2026-10-13T14:17:00Z","modified":"2026-10-17T12:59:49.479710851Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"},{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:55:59.130573Z"},{"id":"CLSA-2026-1792805697","title":"freerdp: Fix of 5 CVEs","description":"- CVE-2026-111880: fix heap out-of-bounds write in NTLM MIC computation;\n  validate the MIC offset against the AUTHENTICATE_MESSAGE length\n- CVE-2023-39354: fix out-of-bounds read in nsc_rle_decompress_data;\n  check that the stream holds the declared plane lengths\n- CVE-2026-109244: winpr-makecert: create key and certificate files with\n  owner-only permissions and use a random export password\n- CVE-2026-109257: NSCodec encoder: free plane buffers in one place to\n  avoid a double free\n- CVE-2026-109677: smartcard: validate cbAtr against the rgbAtr size when\n  unpacking LocateCardsByATR and reader states\n- CVE-2026-111377: server: abort static channel reassembly when fragments\n  exceed the declared total size","status":"published","published":"2026-10-24T16:44:45Z","modified":"2026-10-26T09:43:31.484456019Z","updated_at":"2026-11-02T15:43:54.981307Z"},{"id":"CLSA-2026-1792808931","title":"freerdp: Fix of 2 CVEs","description":"- CVE-2026-111880: fix heap out-of-bounds write in NTLM MIC computation;\n  validate the MIC offset against the AUTHENTICATE_MESSAGE length\n- CVE-2023-39354: fix out-of-bounds read in nsc_rle_decompress_data;\n  check that the stream holds the declared plane lengths\n- CVE-2026-109244: winpr-makecert: create key and certificate files with\n  owner-only permissions and use a random export password\n- CVE-2026-109257: NSCodec encoder: free plane buffers in one place to\n  avoid a double free\n- CVE-2026-109677: smartcard: validate cbAtr against the rgbAtr size when\n  unpacking LocateCardsByATR and reader states\n- CVE-2026-111377: server: abort static channel reassembly when fragments\n  exceed the declared total size","status":"published","published":"2026-10-24T02:29:02Z","modified":"2026-10-26T09:43:44.729100369Z","updated_at":"2026-11-02T15:43:54.981307Z"}]}}