ubuntu-cve-2026-27950
Vulnerability from osv_ubuntu
Published
2026-02-25 22:16
Modified
2026-06-16 11:27
Summary
Details
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. This creates a situation where the advisory suggests the vulnerability is fully resolved, while builds or environments still using SDL2 may retain the vulnerable logic. A complete fix is available in version 3.23.0.
Severity
7.5 (High)
N/A (UNKNOWN)
References
{
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},
{
"binary_name": "libuwac0-0",
"binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm4"
},
{
"binary_name": "libwinpr-tools2-2",
"binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm4"
},
{
"binary_name": "libwinpr2-2",
"binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm4"
},
{
"binary_name": "winpr-utils",
"binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm4"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "freerdp2",
"purl": "pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-0ubuntu0.20.04.2+esm4?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
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"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",
"2.6.1+dfsg1-0ubuntu0.20.04.2+esm2",
"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3",
"2.6.1+dfsg1-0ubuntu0.20.04.2+esm4"
]
},
{
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{
"binary_name": "freerdp2-shadow-x11",
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},
{
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},
{
"binary_name": "freerdp2-x11",
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},
{
"binary_name": "libfreerdp-client2-2",
"binary_version": "2.6.1+dfsg1-3ubuntu2.11"
},
{
"binary_name": "libfreerdp-server2-2",
"binary_version": "2.6.1+dfsg1-3ubuntu2.11"
},
{
"binary_name": "libfreerdp-shadow-subsystem2-2",
"binary_version": "2.6.1+dfsg1-3ubuntu2.11"
},
{
"binary_name": "libfreerdp-shadow2-2",
"binary_version": "2.6.1+dfsg1-3ubuntu2.11"
},
{
"binary_name": "libfreerdp2-2",
"binary_version": "2.6.1+dfsg1-3ubuntu2.11"
},
{
"binary_name": "libuwac0-0",
"binary_version": "2.6.1+dfsg1-3ubuntu2.11"
},
{
"binary_name": "libwinpr-tools2-2",
"binary_version": "2.6.1+dfsg1-3ubuntu2.11"
},
{
"binary_name": "libwinpr2-2",
"binary_version": "2.6.1+dfsg1-3ubuntu2.11"
},
{
"binary_name": "winpr-utils",
"binary_version": "2.6.1+dfsg1-3ubuntu2.11"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "freerdp2",
"purl": "pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-3ubuntu2.11?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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",
"2.6.1+dfsg1-3ubuntu2.9",
"2.6.1+dfsg1-3ubuntu2.10",
"2.6.1+dfsg1-3ubuntu2.11"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "freerdp3-shadow-x11",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
},
{
"binary_name": "freerdp3-wayland",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
},
{
"binary_name": "freerdp3-x11",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
},
{
"binary_name": "libfreerdp-client3-3",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
},
{
"binary_name": "libfreerdp-server3-3",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
},
{
"binary_name": "libfreerdp-shadow-subsystem3-3",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
},
{
"binary_name": "libfreerdp-shadow3-3",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
},
{
"binary_name": "libfreerdp3-3",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
},
{
"binary_name": "libwinpr-tools3-3",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
},
{
"binary_name": "libwinpr3-3",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
},
{
"binary_name": "winpr3-utils",
"binary_version": "3.5.1+dfsg1-0ubuntu1.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "freerdp3",
"purl": "pkg:deb/ubuntu/freerdp3@3.5.1+dfsg1-0ubuntu1.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.5.1+dfsg1-0ubuntu1.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.4.0+dfsg1-0ubuntu2",
"3.4.0+dfsg1-0ubuntu3",
"3.4.0+dfsg1-0ubuntu4",
"3.5.0+dfsg1-0ubuntu1",
"3.5.1+dfsg1-0ubuntu1",
"3.5.1+dfsg1-0ubuntu1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "freerdp2-shadow-x11",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "freerdp2-wayland",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "freerdp2-x11",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "libfreerdp-client2-2t64",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "libfreerdp-server2-2t64",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "libfreerdp-shadow-subsystem2-2t64",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "libfreerdp-shadow2-2t64",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "libfreerdp2-2t64",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "libuwac0-0t64",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "libwinpr-tools2-2t64",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "libwinpr2-2t64",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
},
{
"binary_name": "winpr-utils",
"binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm6"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "freerdp2",
"purl": "pkg:deb/ubuntu/freerdp2@2.11.5+dfsg1-1ubuntu0.1~esm6?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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",
"2.11.5+dfsg1-1ubuntu0.1~esm4",
"2.11.5+dfsg1-1ubuntu0.1~esm5",
"2.11.5+dfsg1-1ubuntu0.1~esm6"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "freerdp3-proxy",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "freerdp3-proxy-modules",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "freerdp3-sdl",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "freerdp3-shadow-x11",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "freerdp3-wayland",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "freerdp3-x11",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "libfreerdp-client3-3",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "libfreerdp-server-proxy3-3",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "libfreerdp-server3-3",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "libfreerdp-shadow-subsystem3-3",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "libfreerdp-shadow3-3",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "libfreerdp3-3",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "libwinpr-tools3-3",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "libwinpr3-3",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
},
{
"binary_name": "winpr3-utils",
"binary_version": "3.16.0+dfsg-2ubuntu0.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "freerdp3",
"purl": "pkg:deb/ubuntu/freerdp3@3.16.0+dfsg-2ubuntu0.3?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.16.0+dfsg-2ubuntu0.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.14.0+dfsg-1ubuntu1",
"3.15.0+dfsg-2.1",
"3.16.0+dfsg-1ubuntu1",
"3.16.0+dfsg-2",
"3.16.0+dfsg-2ubuntu0.1"
]
}
],
"aliases": [],
"details": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. This creates a situation where the advisory suggests the vulnerability is fully resolved, while builds or environments still using SDL2 may retain the vulnerable logic. A complete fix is available in version 3.23.0.",
"id": "UBUNTU-CVE-2026-27950",
"modified": "2026-06-16T11:27:26Z",
"published": "2026-02-25T22:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-27950"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-27950"
},
{
"type": "REPORT",
"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rvfg-86cr-5r6p"
},
{
"type": "REPORT",
"url": "https://github.com/FreeRDP/FreeRDP/blob/master/client/SDL/SDL2/sdl_pointer.cpp#L63-L64"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8105-1"
}
],
"related": [
"USN-8105-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-27950"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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