{"id":"USN-8004-1","summary":"freerdp2 vulnerabilities","details":"Kim Dong Han discovered that FreeRDP did not correctly validate the size of\ncertain variables, which could cause a buffer overflow. An attacker could\npossibly use this issue to cause a denial of service or execute arbitrary\ncode.","modified":"2026-04-27T17:58:17.184816Z","published":"2026-02-03T03:15:05Z","related":["UBUNTU-CVE-2026-23530","UBUNTU-CVE-2026-23531","UBUNTU-CVE-2026-23532","UBUNTU-CVE-2026-23533","UBUNTU-CVE-2026-23534"],"upstream":["CVE-2026-23530","CVE-2026-23531","CVE-2026-23532","CVE-2026-23533","CVE-2026-23534","UBUNTU-CVE-2026-23530","UBUNTU-CVE-2026-23531","UBUNTU-CVE-2026-23532","UBUNTU-CVE-2026-23533","UBUNTU-CVE-2026-23534"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8004-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23530"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23531"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23532"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23533"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23534"}],"affected":[{"package":{"name":"freerdp2","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.2.0+dfsg1-0ubuntu0.18.04.4+esm3?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"freerdp2-shadow-x11","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"freerdp2-wayland","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"freerdp2-x11","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"libfreerdp-client2-2","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"libfreerdp-server2-2","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"libfreerdp-shadow-subsystem2-2","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"libfreerdp-shadow2-2","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"libfreerdp2-2","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"libuwac0-0","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"libwinpr-tools2-2","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"libwinpr2-2","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"},{"binary_name":"winpr-utils","binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2026-23530","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23531","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23532","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23533","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23534","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"freerdp2","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-0ubuntu0.20.04.2+esm1?arch=source&distro=esm-infra/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"freerdp2-shadow-x11","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"freerdp2-wayland","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"freerdp2-x11","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"libfreerdp-client2-2","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"libfreerdp-server2-2","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"libfreerdp-shadow-subsystem2-2","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"libfreerdp-shadow2-2","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"libfreerdp2-2","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"libuwac0-0","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"libwinpr-tools2-2","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"libwinpr2-2","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"},{"binary_name":"winpr-utils","binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"id":"CVE-2026-23530","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23531","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23532","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23533","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23534","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"freerdp2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-3ubuntu2.8?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1+dfsg1-3ubuntu2.8"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"freerdp2-shadow-x11","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"freerdp2-wayland","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"freerdp2-x11","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"libfreerdp-client2-2","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"libfreerdp-server2-2","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"libfreerdp-shadow-subsystem2-2","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"libfreerdp-shadow2-2","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"libfreerdp2-2","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"libuwac0-0","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"libwinpr-tools2-2","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"libwinpr2-2","binary_version":"2.6.1+dfsg1-3ubuntu2.8"},{"binary_name":"winpr-utils","binary_version":"2.6.1+dfsg1-3ubuntu2.8"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-1.json","cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-23530","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23531","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23532","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23533","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23534","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"freerdp2","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.11.5+dfsg1-1ubuntu0.1~esm3?arch=source&distro=esm-apps/noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.5+dfsg1-1ubuntu0.1~esm3"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"freerdp2-shadow-x11","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"freerdp2-wayland","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"freerdp2-x11","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"libfreerdp-client2-2t64","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"libfreerdp-server2-2t64","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"libfreerdp-shadow-subsystem2-2t64","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"libfreerdp-shadow2-2t64","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"libfreerdp2-2t64","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"libuwac0-0t64","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"libwinpr-tools2-2t64","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"libwinpr2-2t64","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"},{"binary_name":"winpr-utils","binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm3"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:24.04:LTS","cves":[{"id":"CVE-2026-23530","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23531","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23532","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23533","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23534","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}}],"schema_version":"1.7.5"}