{"schemaVersion":3,"id":"CVE-2026-57156","aliases":["UBUNTU-CVE-2026-57156","DEBIAN-CVE-2026-57156"],"status":"published","duplicateOf":null,"title":null,"description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0 on 32-bit builds, FreeRDP clients contain an integer overflow in update_read_delta_points in libfreerdp/core/orders.c when multiplying an attacker-controlled point count by sizeof(DELTA_POINT), allowing a malicious RDP peer to allocate an undersized heap buffer and then write beyond it during initialization. This issue is fixed in version 3.28.0.","dates":{"published":"2026-07-10T19:52:25.553Z","modified":"2026-07-15T03:59:00.856Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":8.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":8.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · 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Buffer Overflow","description":"A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().","type":"weakness","status":"Draft","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/122.html"},{"id":"CWE-190","name":"Integer Overflow or Wraparound","description":"The product performs a calculation that can\n         produce an integer overflow or wraparound when the logic\n         assumes that the resulting value will always be larger than\n         the original value. This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.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":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 3.30.0+dfsg-0ubuntu0.26.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.30.0+dfsg-0ubuntu0.24.04.1 | All versions (No fix recorded) | < 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-v5wf-j8j4-77h7","label":"github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v5wf-j8j4-77h7","hostname":"github.com","tags":["X Refsource CONFIRM","REPORT","Exploit","Mitigation","Vendor Advisory"]},{"url":"https://github.com/FreeRDP/FreeRDP/pull/12938","label":"github.com/FreeRDP/FreeRDP/pull/12938","hostname":"github.com","tags":["X Refsource MISC","Issue Tracking","Patch"]},{"url":"https://github.com/FreeRDP/FreeRDP/commit/487f35daccb36a6224e530dcd8fa60850825f823","label":"github.com/FreeRDP/FreeRDP/commit/487f35daccb36a6224e530dcd8fa60850825f823","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-2026-57156","label":"ubuntu.com/security/CVE-2026-57156","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-57156","label":"www.cve.org/CVERecord?id=CVE-2026-57156","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-8561-1","label":"ubuntu.com/security/notices/USN-8561-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-57156","label":"security-tracker.debian.org/tracker/CVE-2026-57156","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:11263-1","SUSE-SU-2026:3562-1","USN-8561-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11263-1","SUSE-SU-2026:3562-1","USN-8561-1"]},"timeline":[{"kind":"published","date":"2026-07-10T19:52:25.553Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-15T03:59:00.856Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T07:21:03.728Z","stale":false,"partial":false}}