CriticalFix available
xrdp — security advisory
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.
- Products
- xrdp
- Affected versions
- 0.10.1-3.1, 0.10.1-3.1+deb13u1, 0.10.1-4, 0.10.1-4.1, 0.10.2-1, 0.10.2-2, 0.10.4.1-1, 0.10.4.1-2, 0.10.5-1, 0.10.5-2, 0.10.5-3, 0.10.5-4, 0.10.5-5, 0.10.6-1, 0.10.6-2, 0.10.6-3, 0.10.6-4, 0.10.6-5, 0.10.6.1-1, 0.10.6.1-2~bpo13+1, 0.9.21.1-1, 0.9.21.1-1+deb12u1, 0.9.21.1-1+deb12u2
- Fixed versions
- 0.10.1-3.1+deb13u2, 0.10.6.1-2, 0.9.21.1-1+deb12u3
- CVEs
- CVE-2026-41252
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:52 UTC · Revision 2
Source evidence
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.
osv:DEBIAN-CVE-2026-41252
xrdp
Fixed versions: 0.9.21.1-1+deb12u3
xrdp
Fixed versions: 0.10.1-3.1+deb13u2
xrdp
Fixed versions: 0.10.6.1-2
Complete source record
{
"id": "52e559b5976591576779d2fc56324d46ae54a79167095de11991b236567d6a81",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-41252",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-41252",
"summary": "xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.",
"evidence": "osv:DEBIAN-CVE-2026-41252",
"products": [
{
"name": {
"value": "xrdp",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.9.21.1-1+deb12u3",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "0.9.21.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.9.21.1-1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "0.9.21.1-1+deb12u2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "xrdp",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.10.1-3.1+deb13u2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "0.10.1-3.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.10.1-3.1+deb13u1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "xrdp",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.10.6.1-2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "0.10.1-3.1",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.1-4",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.1-4.1",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.2-2",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.4.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.4.1-2",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.5-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.5-2",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.5-3",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.5-4",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.5-5",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.6-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.6-2",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.6-3",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.6-4",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.6-5",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.6.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.10.6.1-2~bpo13+1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "DEBIAN-CVE-2026-41252",
"aliases": [
"DEBIAN-CVE-2026-41252"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.21.1-1+deb12u3"
}
]
}
],
"package": {
"name": "xrdp",
"purl": "pkg:deb/debian/xrdp?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.9.21.1-1",
"0.9.21.1-1+deb12u1",
"0.9.21.1-1+deb12u2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41252.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.10.1-3.1+deb13u2"
}
]
}
],
"package": {
"name": "xrdp",
"purl": "pkg:deb/debian/xrdp?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.10.1-3.1",
"0.10.1-3.1+deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41252.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.10.6.1-2"
}
]
}
],
"package": {
"name": "xrdp",
"purl": "pkg:deb/debian/xrdp?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.10.1-3.1",
"0.10.1-4",
"0.10.1-4.1",
"0.10.2-1",
"0.10.2-2",
"0.10.4.1-1",
"0.10.4.1-2",
"0.10.5-1",
"0.10.5-2",
"0.10.5-3",
"0.10.5-4",
"0.10.5-5",
"0.10.6-1",
"0.10.6-2",
"0.10.6-3",
"0.10.6-4",
"0.10.6-5",
"0.10.6.1-1",
"0.10.6.1-2~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41252.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-25T09:47:34.932617808Z",
"provider": "osv",
"upstream": [
"CVE-2026-41252"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-41252"
]
},
"related_cves": [
{
"value": "CVE-2026-41252",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 445121,
"published_at": "2026-07-20T17:17:08.31+00:00"
}