Kim Dong Han discovered that FreeRDP did not correctly validate the size of certain variables, which could cause a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
{
"binaries": [
{
"binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm3",
"binary_name": "freerdp2-dev"
},
{
"binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm3",
"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": "libuwac0-dev"
},
{
"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": "libwinpr2-dev"
},
{
"binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm3",
"binary_name": "winpr-utils"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-1.json"
{
"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"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
{
"binaries": [
{
"binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm1",
"binary_name": "freerdp2-dev"
},
{
"binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm1",
"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": "libuwac0-dev"
},
{
"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": "libwinpr2-dev"
},
{
"binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm1",
"binary_name": "winpr-utils"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-1.json"
{
"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"
}
]
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
{
"binaries": [
{
"binary_version": "2.6.1+dfsg1-3ubuntu2.8",
"binary_name": "freerdp2-dev"
},
{
"binary_version": "2.6.1+dfsg1-3ubuntu2.8",
"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": "libuwac0-dev"
},
{
"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": "libwinpr2-dev"
},
{
"binary_version": "2.6.1+dfsg1-3ubuntu2.8",
"binary_name": "winpr-utils"
}
],
"availability": "No subscription required"
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-1.json"
{
"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"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
{
"binaries": [
{
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm3",
"binary_name": "freerdp2-dev"
},
{
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm3",
"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": "libuwac0-dev"
},
{
"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": "libwinpr2-dev"
},
{
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm3",
"binary_name": "winpr-utils"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-1.json"
{
"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"
}
]
}
],
"ecosystem": "Ubuntu:Pro:24.04:LTS"
}