FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. This issue affects Clients only. Integer underflow leading to DOS (e.g. abort due to WINPR_ASSERT with default compilation flags). When an insufficient blockLen is provided, and proper length validation is not performed, an Integer Underflow occurs, leading to a Denial of Service (DOS) vulnerability. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this vulnerability.
{
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39350.json",
"cwe_ids": [
"CWE-191"
]
}{
"cpe": [
"cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*",
"cpe:2.3:a:freerdp:freerdp:3.0.0:beta1:*:*:*:*:*:*",
"cpe:2.3:a:freerdp:freerdp:3.0.0:beta2:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "2.11.0"
},
{
"introduced": "3.0.0-beta1"
},
{
"last_affected": "3.0.0-beta1"
},
{
"introduced": "3.0.0-beta2"
},
{
"last_affected": "3.0.0-beta2"
}
],
"source": [
"CPE_RANGE",
"CPE_STRING",
"REFERENCES"
]
}
[
{
"id": "CVE-2023-39350-00540f24",
"deprecated": false,
"digest": {
"length": 5649.0,
"function_hash": "54068848438759215393688713051628594697"
},
"signature_version": "v1",
"target": {
"file": "libfreerdp/codec/rfx.c",
"function": "rfx_process_message_tileset"
},
"source": "https://github.com/freerdp/freerdp/commit/e204fc8be5a372626b13f66daf2abafe71dbc2dc",
"signature_type": "Function"
},
{
"id": "CVE-2023-39350-de15d898",
"deprecated": false,
"digest": {
"line_hashes": [
"274933978928545150709641897212241319202",
"246722152735110148990168679476651678227",
"304280664906965065868689072837941700010",
"175550823714292050554287469096928302230"
],
"threshold": 0.9
},
"signature_version": "v1",
"target": {
"file": "libfreerdp/codec/rfx.c"
},
"source": "https://github.com/freerdp/freerdp/commit/e204fc8be5a372626b13f66daf2abafe71dbc2dc",
"signature_type": "Line"
}
]
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-39350.json"
"2026-08-18T16:27:17Z"