UBUNTU-CVE-2026-55626

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Source
https://ubuntu.com/security/CVE-2026-55626
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55626.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-55626
Upstream
Published
2026-07-20T18:16:00Z
Modified
2026-07-30T11:00:21Z
Severity
  • 8.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L CVSS Calculator
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

xrdp is an open source RDP server. In versions 0.10.6 and prior, when an authenticated user session is initialized using the Xvnc backend over UNIX domain sockets, the Xvnc process is launched with insufficient authentication mechanisms. A local authenticated attacker could exploit this vulnerability to bypass intended session isolation, allowing them to unauthorizedly view or control the active desktop sessions of other users on the same system. Users using other backends, such as xorgxrdp or Xvnc over TCP sockets, are not affected. 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-2026-55626.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-2026-55626.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-2026-55626.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-2026-55626.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-2026-55626.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-2026-55626.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-2026-55626.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-2026-55626.json"