freerdp2 — security advisory
In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.
- Products
- freerdp2
- Affected versions
- Not specified
- Fixed versions
- 2.1.1+dfsg1-1
- CVEs
- CVE-2020-11038
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:55 UTC · Revision 1
Source evidence
In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.
osv:DEBIAN-CVE-2020-11038
freerdp2
Fixed versions: 2.1.1+dfsg1-1
Complete source record
{
"id": "9a9329e7c6a065cdb66e4d135f3ed4a667c4ae1188da4575e9fbcb88dfccb7db",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-11038",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2020-11038",
"summary": "In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.",
"evidence": "osv:DEBIAN-CVE-2020-11038",
"products": [
{
"name": {
"value": "freerdp2",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.1.1+dfsg1-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2020-11038",
"aliases": [
"DEBIAN-CVE-2020-11038"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.1+dfsg1-1"
}
]
}
],
"package": {
"name": "freerdp2",
"purl": "pkg:deb/debian/freerdp2?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-11038.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:01:18.601557253Z",
"provider": "osv",
"upstream": [
"CVE-2020-11038"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2020-11038"
]
},
"related_cves": [
{
"value": "CVE-2020-11038",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 451560,
"published_at": "2020-05-29T19:15:10.31+00:00"
}