{"id":"CVE-2026-109257","aliases":["CLSA-2026-1792805697","CLSA-2026-1792808931","DEBIAN-CVE-2026-109257","EUVD-2026-97701","GHSA-2hhg-8xx6-v73w","GHSA-q56w-xxg8-3cmg","UBUNTU-CVE-2026-109257"],"status":"published","title":"FreeRDP before 3.32.0 Double Free via NSCodec plane growth failure","description":"FreeRDP before 3.32.0 contains a double-free vulnerability in nsc_context_initialize_encode() that leaves dangling plane pointers after a partial buffer growth failure. Attackers using a crafted RDP client can negotiate NSCodec with a large desktop geometry to trigger allocation failure, crashing the server during context teardown.","severity":{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00393,"percentile":0.33995,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-415"],"published":"2026-10-12T16:04:28Z","modified":"2026-10-29T02:48:28Z","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":"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"]},{"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+dfs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Advisory","advisory","report"]},{"url":"https://www.vulncheck.com/advisories/freerdp-before-3.32.0-double-free-via-nscodec-plane-growth-failure","tags":["third-party-advisory","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109257","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-q56w-xxg8-3cmg"},{"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-2026-109677","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-2026-109257.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-109257","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-109257","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-109257","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-109257","title":"FreeRDP 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Attackers using a crafted RDP client can negotiate NSCodec with a large desktop geometry to trigger allocation failure, crashing the server during context teardown.","status":"published","published":"2026-10-12T16:04:28.144Z","modified":"2026-10-29T02:48:28.432320326Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T15:44:55.279797Z"},{"id":"DEBIAN-CVE-2026-109257","description":"FreeRDP before 3.32.0 contains a double-free vulnerability in nsc_context_initialize_encode() that leaves dangling plane pointers after a partial buffer growth failure. Attackers using a crafted RDP client can negotiate NSCodec with a large desktop geometry to trigger allocation failure, crashing the server during context teardown.","status":"published","published":"2026-10-12T17:17:17.28Z","modified":"2026-10-28T10:00:14.426102516Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:49.381767Z"},{"id":"UBUNTU-CVE-2026-109257","description":"FreeRDP before 3.32.0 contains a double-free vulnerability in nsc_context_initialize_encode() that leaves dangling plane pointers after a partial buffer growth failure. Attackers using a crafted RDP client can negotiate NSCodec with a large desktop geometry to trigger allocation failure, crashing the server during context teardown.","status":"published","published":"2026-10-12T17:17:00Z","modified":"2026-10-28T20:16:19.714963128Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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"}]}}