Critical
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, 0.10.1-3.1, 0.10.1-3.1+deb13u1build0.25.10.1, 0.10.1-4, 0.10.1-4.1, 0.10.1-4.1ubuntu0.1, 0.10.6.1-2ubuntu1, 0.6.0-1, 0.6.0-1ubuntu0.1, 0.6.0-1ubuntu0.1+esm1, 0.6.0-1ubuntu0.1+esm2, 0.6.0-1ubuntu0.1+esm3, 0.6.1-2, 0.6.1-2ubuntu0.1, 0.6.1-2ubuntu0.3, 0.6.1-2ubuntu0.3+esm1, 0.6.1-2ubuntu0.3+esm2, 0.6.1-2ubuntu0.3+esm3, 0.9.1-9, 0.9.12-1, 0.9.12-1ubuntu0.1, 0.9.12-1ubuntu0.1+esm1, 0.9.12-1ubuntu0.1+esm2, 0.9.15-1ubuntu1, 0.9.17-1, 0.9.17-2, 0.9.17-2ubuntu1, 0.9.17-2ubuntu2, 0.9.17-2ubuntu2+esm1, 0.9.17-2ubuntu3, 0.9.17-2ubuntu3+esm1, 0.9.17-2ubuntu3+esm2, 0.9.17-2ubuntu3.1, 0.9.21.1-1, 0.9.24-2, 0.9.24-3, 0.9.24-3build1, 0.9.24-3build2, 0.9.24-4, 0.9.24-4ubuntu0.1, 0.9.24-4ubuntu0.1~esm1, 0.9.4-1, 0.9.4-2, 0.9.4-3, 0.9.4-4, 0.9.4-5, 0.9.5-1, 0.9.5-1build1, 0.9.5-2, 0.9.5-2ubuntu0.1~esm1, 0.9.5-2ubuntu0.1~esm2, 0.9.5-2ubuntu0.1~esm3, 0.9.9-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-41252
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:11 UTC · Revision 1
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:UBUNTU-CVE-2026-41252
xrdp
Fixed versions: Not specified
xrdp
Fixed versions: Not specified
xrdp
Fixed versions: Not specified
xrdp
Fixed versions: Not specified
xrdp
Fixed versions: Not specified
xrdp
Fixed versions: Not specified
xrdp
Fixed versions: Not specified
xrdp
Fixed versions: Not specified
xrdp
Fixed versions: Not specified
Complete source record
{
"id": "c8a80fda9e83deb8e9df91e127c117aa05825653c98ed3f34b64f60679f0599c",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-41252",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-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:UBUNTU-CVE-2026-41252",
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{
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"evidence": "/affected/0/versions"
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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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{
"value": "0.9.12-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.9.12-1ubuntu0.1",
"evidence": "/affected/3/versions"
},
{
"value": "0.9.12-1ubuntu0.1+esm1",
"evidence": "/affected/3/versions"
},
{
"value": "0.9.12-1ubuntu0.1+esm2",
"evidence": "/affected/3/versions"
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},
{
"name": {
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"evidence": "/affected/4/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "0.9.15-1ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "0.9.17-1",
"evidence": "/affected/4/versions"
},
{
"value": "0.9.17-2",
"evidence": "/affected/4/versions"
},
{
"value": "0.9.17-2ubuntu1",
"evidence": "/affected/4/versions"
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{
"value": "0.9.17-2ubuntu2",
"evidence": "/affected/4/versions"
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{
"value": "0.9.17-2ubuntu2+esm1",
"evidence": "/affected/4/versions"
},
{
"value": "0.9.17-2ubuntu3",
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{
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"evidence": "/affected/4/versions"
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{
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"name": {
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"evidence": "/affected/5/package/name"
},
"prerequisites": [],
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{
"value": "0.9.21.1-1",
"evidence": "/affected/5/versions"
},
{
"value": "0.9.24-2",
"evidence": "/affected/5/versions"
},
{
"value": "0.9.24-3",
"evidence": "/affected/5/versions"
},
{
"value": "0.9.24-3build1",
"evidence": "/affected/5/versions"
},
{
"value": "0.9.24-3build2",
"evidence": "/affected/5/versions"
},
{
"value": "0.9.24-4",
"evidence": "/affected/5/versions"
},
{
"value": "0.9.24-4ubuntu0.1~esm1",
"evidence": "/affected/5/versions"
},
{
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"evidence": "/affected/5/versions"
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},
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{
"value": "0.10.6.1-2ubuntu1",
"evidence": "/affected/7/versions"
}
]
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{
"name": {
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"evidence": "/affected/8/package/name"
},
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{
"value": "0.10.1-3.1",
"evidence": "/affected/8/versions"
},
{
"value": "0.10.1-4",
"evidence": "/affected/8/versions"
},
{
"value": "0.10.1-4.1",
"evidence": "/affected/8/versions"
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{
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],
"severity": "critical",
"structured": {
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"aliases": [
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],
"metrics": [
{
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"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
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"score": "medium"
}
],
"affected": [
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}
],
"package": {
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"ecosystem": "Ubuntu:Pro:14.04:LTS"
},
"versions": [
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"0.6.0-1ubuntu0.1+esm3"
],
"database_specific": {
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},
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"package": {
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},
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},
"ecosystem_specific": {
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{
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{
"binary_name": "xrdp",
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},
{
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}
]
}
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{
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},
"versions": [
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"0.9.12-1",
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"0.9.12-1ubuntu0.1+esm1",
"0.9.12-1ubuntu0.1+esm2"
],
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},
"ecosystem_specific": {
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},
{
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},
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"0.9.17-2ubuntu3+esm1",
"0.9.17-2ubuntu3+esm2",
"0.9.17-2ubuntu3.1"
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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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},
"ecosystem_specific": {
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{
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}
]
}
},
{
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],
"package": {
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"purl": "pkg:deb/ubuntu/xrdp?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
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"0.10.1-4",
"0.10.1-4.1",
"0.10.1-4.1ubuntu0.1"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
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"binary_version": "0.10.1-4.1ubuntu0.1"
}
]
}
}
],
"modified": "2026-10-17T12:58:15.025162599Z",
"provider": "osv",
"upstream": [
"CVE-2026-41252"
],
"references": [
"https://ubuntu.com/security/CVE-2026-41252",
"https://www.cve.org/CVERecord?id=CVE-2026-41252",
"https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-w5vg-6qmv-j63j"
]
},
"related_cves": [
{
"value": "CVE-2026-41252",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 358437,
"published_at": "2026-07-20T17:17:00+00:00"
}