UBUNTU-CVE-2026-33145

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Source
https://ubuntu.com/security/CVE-2026-33145
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33145.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33145
Upstream
  • CVE-2026-33145
Published
2026-04-17T21:16:00Z
Modified
2026-05-20T16:25:25.187650560Z
Severity
  • 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

xrdp is an open source RDP server. Versions through 0.10.5 allow an authenticated remote user to execute arbitrary commands on the server due to unsafe handling of the AlternateShell parameter in xrdp-sesman. When the AllowAlternateShell setting is enabled (which is the default when not explicitly configured), xrdp accepts a client-supplied AlternateShell value and executes it via /bin/sh -c during session initialization. This results in shell-interpreted execution of unsanitized, user-controlled input. This behavior effectively provides a scriptable remote command execution primitive over RDP within the security context of the authenticated user, occurring prior to normal window manager startup. This can bypass expected session initialization flows and operational assumptions that restrict execution to interactive desktop environments. This issue has been fixed in version 0.10.6.

References

Affected packages

Ubuntu:24.04:LTS
xrdp

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown 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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.9.24-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33145.json"
Ubuntu:25.10
xrdp

Package

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

Affected ranges

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

Affected versions

0.*
0.10.1-3
0.10.1-3.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.10.1-3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33145.json"
Ubuntu:26.04:LTS
xrdp

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown 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-2026-33145.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
0Unknown 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-2026-33145.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
0Unknown 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-2026-33145.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
0Unknown 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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xorgxrdp",
            "binary_version": "0.9.5-2ubuntu0.1~esm2"
        },
        {
            "binary_name": "xrdp",
            "binary_version": "0.9.5-2ubuntu0.1~esm2"
        },
        {
            "binary_name": "xrdp-pulseaudio-installer",
            "binary_version": "0.9.5-2ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33145.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
0Unknown 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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.9.12-1ubuntu0.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33145.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
0Unknown 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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xrdp",
            "binary_version": "0.9.17-2ubuntu3+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33145.json"