UBUNTU-CVE-2026-55645

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Source
https://ubuntu.com/security/CVE-2026-55645
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55645.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-55645
Upstream
Published
2026-07-20T17:18:00Z
Modified
2026-07-29T10:18:18Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fields from the network stream. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted, truncated Client Control PDU. Due to missing bounds checks, the xrdp process may perform out-of-bounds memory reads, which can result in the termination of the service (Denial of Service). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service.This issue has been fixed in version 0.10.6.1.

References

Affected packages

Ubuntu:25.10
xrdp

Package

Name
xrdp
Purl
pkg:deb/ubuntu/xrdp?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.10.1-3
0.10.1-3.1
0.10.1-3.1+deb13u1build0.25.10.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.10.1-3.1+deb13u1build0.25.10.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55645.json"
Ubuntu:26.04:LTS
xrdp

Package

Name
xrdp
Purl
pkg:deb/ubuntu/xrdp?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.10.1-3.1
0.10.1-4
0.10.1-4.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.10.1-4.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55645.json"
Ubuntu:Pro:14.04:LTS
xrdp

Package

Name
xrdp
Purl
pkg:deb/ubuntu/xrdp?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.6.0-1ubuntu0.1+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55645.json"
Ubuntu:Pro:16.04:LTS
xrdp

Package

Name
xrdp
Purl
pkg:deb/ubuntu/xrdp?arch=source&distro=esm-apps%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.6.1-2ubuntu0.3+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55645.json"
Ubuntu:Pro:18.04:LTS
xrdp

Package

Name
xrdp
Purl
pkg:deb/ubuntu/xrdp?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.1-9
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xorgxrdp",
            "binary_version": "0.9.5-2ubuntu0.1~esm3"
        },
        {
            "binary_name": "xrdp",
            "binary_version": "0.9.5-2ubuntu0.1~esm3"
        },
        {
            "binary_name": "xrdp-pulseaudio-installer",
            "binary_version": "0.9.5-2ubuntu0.1~esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55645.json"
Ubuntu:Pro:20.04:LTS
xrdp

Package

Name
xrdp
Purl
pkg:deb/ubuntu/xrdp?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.9-1
0.9.12-1
0.9.12-1ubuntu0.1
0.9.12-1ubuntu0.1+esm1
0.9.12-1ubuntu0.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.9.12-1ubuntu0.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55645.json"
Ubuntu:Pro:22.04:LTS
xrdp

Package

Name
xrdp
Purl
pkg:deb/ubuntu/xrdp?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.9.17-2ubuntu3+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55645.json"
Ubuntu:Pro:24.04:LTS
xrdp

Package

Name
xrdp
Purl
pkg:deb/ubuntu/xrdp?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
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~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.9.24-4ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55645.json"