UnratedFix available
freerdp2 vulnerabilities
Type: advisorySources: OSV
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.
- Products
- freerdp2
- Affected 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, 2.0.0~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+dfsg1-0ubuntu0.18.04.1, 2.1.1+dfsg1-0ubuntu0.20.04.1, 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, 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, 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, 2.3.0+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+dfsg1-0ubuntu0.20.04.1, 2.6.1+dfsg1-0ubuntu0.20.04.2, 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
- Fixed versions
- 2.11.5+dfsg1-1ubuntu0.1~esm3, 2.2.0+dfsg1-0ubuntu0.18.04.4+esm3, 2.6.1+dfsg1-0ubuntu0.20.04.2+esm1, 2.6.1+dfsg1-3ubuntu2.8
- CVEs
- CVE-2026-23530, CVE-2026-23531, CVE-2026-23532, CVE-2026-23533, CVE-2026-23534
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:16 UTC · Revision 1
Source evidence
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.
osv:USN-8004-1
freerdp2
Fixed versions: 2.2.0+dfsg1-0ubuntu0.18.04.4+esm3
freerdp2
Fixed versions: 2.6.1+dfsg1-0ubuntu0.20.04.2+esm1
freerdp2
Fixed versions: 2.6.1+dfsg1-3ubuntu2.8
freerdp2
Fixed versions: 2.11.5+dfsg1-1ubuntu0.1~esm3
Complete source record
{
"id": "eceeb85d17aa62a307771558584a4e4ea6f42778f27d51c17955a19fc5b6f034",
"url": "https://osv.dev/vulnerability/USN-8004-1",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "freerdp2 vulnerabilities",
"summary": "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.",
"evidence": "osv:USN-8004-1",
"products": [
{
"name": {
"value": "freerdp2",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm3",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "2.0.0~git20170725.1.1648deb+dfsg1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0~git20170725.1.1648deb+dfsg1-5",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu2",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0~git20170725.1.1648deb+dfsg1-6",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0~git20170725.1.1648deb+dfsg1-6build1",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0~git20170725.1.1648deb+dfsg1-7",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.1+dfsg1-0ubuntu0.18.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.18.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.18.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.18.04.3",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.18.04.4",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm1",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "freerdp2",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "2.0.0~git20190204.1.2693389a+dfsg1-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.0.0~git20190204.1.2693389a+dfsg1-2",
"evidence": "/affected/1/versions"
},
{
"value": "2.0.0~git20190204.1.2693389a+dfsg1-2build1",
"evidence": "/affected/1/versions"
},
{
"value": "2.0.0~git20190204.1.2693389a+dfsg1-2build2",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.1+dfsg1-0ubuntu0.20.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.20.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.20.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.20.04.3",
"evidence": "/affected/1/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.20.04.4",
"evidence": "/affected/1/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.20.04.5",
"evidence": "/affected/1/versions"
},
{
"value": "2.2.0+dfsg1-0ubuntu0.20.04.6",
"evidence": "/affected/1/versions"
},
{
"value": "2.6.1+dfsg1-0ubuntu0.20.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "2.6.1+dfsg1-0ubuntu0.20.04.2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "freerdp2",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.6.1+dfsg1-3ubuntu2.8",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "2.3.0+dfsg1-2build1",
"evidence": "/affected/2/versions"
},
{
"value": "2.3.0+dfsg1-2ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "2.3.0+dfsg1-2ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "2.4.1+dfsg1-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.4.1+dfsg1-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "2.4.1+dfsg1-1ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "2.5.0+dfsg1-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.0+dfsg1-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-3",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-3ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-3ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-3ubuntu2.1",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-3ubuntu2.2",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-3ubuntu2.3",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-3ubuntu2.4",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-3ubuntu2.5",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-3ubuntu2.6",
"evidence": "/affected/2/versions"
},
{
"value": "2.6.1+dfsg1-3ubuntu2.7",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "freerdp2",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.11.5+dfsg1-1ubuntu0.1~esm3",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "2.10.0+dfsg1-1.1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "2.11.2+dfsg1-1",
"evidence": "/affected/3/versions"
},
{
"value": "2.11.2+dfsg1-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "2.11.2+dfsg1-1build3",
"evidence": "/affected/3/versions"
},
{
"value": "2.11.5+dfsg1-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "2.11.5+dfsg1-1build2",
"evidence": "/affected/3/versions"
},
{
"value": "2.11.5+dfsg1-1ubuntu0.1~esm1",
"evidence": "/affected/3/versions"
},
{
"value": "2.11.5+dfsg1-1ubuntu0.1~esm2",
"evidence": "/affected/3/versions"
}
]
}
],
"severity": "unknown",
"structured": {
"id": "USN-8004-1",
"aliases": [
"USN-8004-1"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm3"
}
]
}
],
"package": {
"name": "freerdp2",
"purl": "pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-infra%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-1.json",
"cves_map": {
"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:R/S:U/C:L/I:L/A:H"
},
{
"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:R/S:U/C:L/I:L/A:H"
},
{
"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:R/S:U/C:L/I:L/A:H"
},
{
"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:R/S:U/C:L/I:L/A:H"
},
{
"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:R/S:U/C:L/I:L/A:H"
},
{
"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"
}
},
"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"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm1"
}
]
}
],
"package": {
"name": "freerdp2",
"purl": "pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-infra%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-1.json",
"cves_map": {
"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:R/S:U/C:L/I:L/A:H"
},
{
"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",
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},
{
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},
{
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},
{
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{
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{
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{
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},
{
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}
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},
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{
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},
{
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},
{
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{
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}
]
},
{
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{
"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:R/S:U/C:L/I:L/A:H"
},
{
"type": "CVSS_V3",
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},
{
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}
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{
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{
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{
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{
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},
{
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},
{
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},
{
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},
{
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{
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},
{
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},
{
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},
{
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{
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{
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},
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{
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{
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{
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{
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{
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{
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{
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},
{
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},
{
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},
{
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]
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],
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}
},
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}
],
"modified": "2026-10-27T04:16:44.196277023Z",
"provider": "osv",
"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": [
"https://ubuntu.com/security/notices/USN-8004-1",
"https://ubuntu.com/security/CVE-2026-23530",
"https://ubuntu.com/security/CVE-2026-23531",
"https://ubuntu.com/security/CVE-2026-23532",
"https://ubuntu.com/security/CVE-2026-23533",
"https://ubuntu.com/security/CVE-2026-23534"
]
},
"related_cves": [
{
"value": "CVE-2026-23530",
"evidence": "/upstream"
},
{
"value": "CVE-2026-23531",
"evidence": "/upstream"
},
{
"value": "CVE-2026-23532",
"evidence": "/upstream"
},
{
"value": "CVE-2026-23533",
"evidence": "/upstream"
},
{
"value": "CVE-2026-23534",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 460198,
"published_at": "2026-02-03T03:15:05+00:00"
}