USN-8004-2

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Source
https://ubuntu.com/security/notices/USN-8004-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-2.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-8004-2
Upstream
Related
Published
2026-02-08T22:38:37Z
Modified
2026-02-11T08:00:15.849019Z
Summary
freerdp2 regression
Details

USN-8004-1 fixed vulnerabilities in FreeRDP. The update for CVE-2026-23533 introduced a regression. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Kim Dong Han discovered that FreeRDP did not correctly validate the size of certain variables, which could cause a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

References

Affected packages

Ubuntu:Pro:18.04:LTS / freerdp2

Package

Name
freerdp2
Purl
pkg:deb/ubuntu/freerdp2@2.2.0+dfsg1-0ubuntu0.18.04.4+esm4?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.2.0+dfsg1-0ubuntu0.18.04.4+esm4

Affected versions

2.*
2.0.0~git20170725.1.1648deb+dfsg1-1
2.0.0~git20170725.1.1648deb+dfsg1-5
2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu1
2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu2
2.0.0~git20170725.1.1648deb+dfsg1-6
2.0.0~git20170725.1.1648deb+dfsg1-6build1
2.0.0~git20170725.1.1648deb+dfsg1-7
2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1
2.1.1+dfsg1-0ubuntu0.18.04.1
2.2.0+dfsg1-0ubuntu0.18.04.1
2.2.0+dfsg1-0ubuntu0.18.04.2
2.2.0+dfsg1-0ubuntu0.18.04.3
2.2.0+dfsg1-0ubuntu0.18.04.4
2.2.0+dfsg1-0ubuntu0.18.04.4+esm1
2.2.0+dfsg1-0ubuntu0.18.04.4+esm2
2.2.0+dfsg1-0ubuntu0.18.04.4+esm3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "freerdp2-dev"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "freerdp2-shadow-x11"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "freerdp2-wayland"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "freerdp2-x11"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "libfreerdp-client2-2"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "libfreerdp-server2-2"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "libfreerdp-shadow-subsystem2-2"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "libfreerdp-shadow2-2"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "libfreerdp2-2"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "libuwac0-0"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "libuwac0-dev"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "libwinpr-tools2-2"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "libwinpr2-2"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "libwinpr2-dev"
        },
        {
            "binary_version": "2.2.0+dfsg1-0ubuntu0.18.04.4+esm4",
            "binary_name": "winpr-utils"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-23533"
        }
    ],
    "ecosystem": "Ubuntu:Pro:18.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-2.json"

Ubuntu:Pro:20.04:LTS / freerdp2

Package

Name
freerdp2
Purl
pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-0ubuntu0.20.04.2+esm2?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.6.1+dfsg1-0ubuntu0.20.04.2+esm2

Affected versions

2.*
2.0.0~git20190204.1.2693389a+dfsg1-1
2.0.0~git20190204.1.2693389a+dfsg1-2
2.0.0~git20190204.1.2693389a+dfsg1-2build1
2.0.0~git20190204.1.2693389a+dfsg1-2build2
2.1.1+dfsg1-0ubuntu0.20.04.1
2.2.0+dfsg1-0ubuntu0.20.04.1
2.2.0+dfsg1-0ubuntu0.20.04.2
2.2.0+dfsg1-0ubuntu0.20.04.3
2.2.0+dfsg1-0ubuntu0.20.04.4
2.2.0+dfsg1-0ubuntu0.20.04.5
2.2.0+dfsg1-0ubuntu0.20.04.6
2.6.1+dfsg1-0ubuntu0.20.04.1
2.6.1+dfsg1-0ubuntu0.20.04.2
2.6.1+dfsg1-0ubuntu0.20.04.2+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "freerdp2-dev"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "freerdp2-shadow-x11"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "freerdp2-wayland"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "freerdp2-x11"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "libfreerdp-client2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "libfreerdp-server2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "libfreerdp-shadow-subsystem2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "libfreerdp-shadow2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "libfreerdp2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "libuwac0-0"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "libuwac0-dev"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "libwinpr-tools2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "libwinpr2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "libwinpr2-dev"
        },
        {
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
            "binary_name": "winpr-utils"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-23533"
        }
    ],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-2.json"

Ubuntu:22.04:LTS / freerdp2

Package

Name
freerdp2
Purl
pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-3ubuntu2.9?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.6.1+dfsg1-3ubuntu2.9

Affected versions

2.*
2.3.0+dfsg1-2build1
2.3.0+dfsg1-2ubuntu1
2.3.0+dfsg1-2ubuntu2
2.4.1+dfsg1-1
2.4.1+dfsg1-1ubuntu1
2.4.1+dfsg1-1ubuntu2
2.5.0+dfsg1-1
2.6.0+dfsg1-1
2.6.1+dfsg1-1
2.6.1+dfsg1-3
2.6.1+dfsg1-3ubuntu1
2.6.1+dfsg1-3ubuntu2
2.6.1+dfsg1-3ubuntu2.1
2.6.1+dfsg1-3ubuntu2.2
2.6.1+dfsg1-3ubuntu2.3
2.6.1+dfsg1-3ubuntu2.4
2.6.1+dfsg1-3ubuntu2.5
2.6.1+dfsg1-3ubuntu2.6
2.6.1+dfsg1-3ubuntu2.7
2.6.1+dfsg1-3ubuntu2.8

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "freerdp2-dev"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "freerdp2-shadow-x11"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "freerdp2-wayland"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "freerdp2-x11"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "libfreerdp-client2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "libfreerdp-server2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "libfreerdp-shadow-subsystem2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "libfreerdp-shadow2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "libfreerdp2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "libuwac0-0"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "libuwac0-dev"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "libwinpr-tools2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "libwinpr2-2"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "libwinpr2-dev"
        },
        {
            "binary_version": "2.6.1+dfsg1-3ubuntu2.9",
            "binary_name": "winpr-utils"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-23533"
        }
    ],
    "ecosystem": "Ubuntu:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-2.json"

Ubuntu:Pro:24.04:LTS / freerdp2

Package

Name
freerdp2
Purl
pkg:deb/ubuntu/freerdp2@2.11.5+dfsg1-1ubuntu0.1~esm4?arch=source&distro=esm-apps/noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.11.5+dfsg1-1ubuntu0.1~esm4

Affected versions

2.*
2.10.0+dfsg1-1.1ubuntu1
2.11.2+dfsg1-1
2.11.2+dfsg1-1build1
2.11.2+dfsg1-1build3
2.11.5+dfsg1-1build1
2.11.5+dfsg1-1build2
2.11.5+dfsg1-1ubuntu0.1~esm1
2.11.5+dfsg1-1ubuntu0.1~esm2
2.11.5+dfsg1-1ubuntu0.1~esm3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "freerdp2-dev"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "freerdp2-shadow-x11"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "freerdp2-wayland"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "freerdp2-x11"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "libfreerdp-client2-2t64"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "libfreerdp-server2-2t64"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "libfreerdp-shadow-subsystem2-2t64"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "libfreerdp-shadow2-2t64"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "libfreerdp2-2t64"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "libuwac0-0t64"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "libuwac0-dev"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "libwinpr-tools2-2t64"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "libwinpr2-2t64"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "libwinpr2-dev"
        },
        {
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm4",
            "binary_name": "winpr-utils"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-23533"
        }
    ],
    "ecosystem": "Ubuntu:Pro:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8004-2.json"