Medium
Security advisory
In FreeRDP less than or equal to 2.0.0, there is an out-of-bound read in ntlm_read_ntlm_v2_client_challenge that reads up to 28 bytes out-of-bound to an internal structure. This has been fixed in 2.1.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-11086
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:33 UTC · Revision 1
Source evidence
In FreeRDP less than or equal to 2.0.0, there is an out-of-bound read in ntlm_read_ntlm_v2_client_challenge that reads up to 28 bytes out-of-bound to an internal structure. This has been fixed in 2.1.0.
osv:CVE-2020-11086
Complete source record
{
"id": "8b7e23af90eb5cbd65875b57af5143c2eea72e9abfb28de5afb120dded83ae29",
"url": "https://osv.dev/vulnerability/CVE-2020-11086",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-11086",
"summary": "In FreeRDP less than or equal to 2.0.0, there is an out-of-bound read in ntlm_read_ntlm_v2_client_challenge that reads up to 28 bytes out-of-bound to an internal structure. This has been fixed in 2.1.0.",
"evidence": "osv:CVE-2020-11086",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-11086",
"aliases": [
"CVE-2020-11086",
"GHSA-fg8v-w34r-c974"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/freerdp/freerdp",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "11b9b1ca6be433f1da5bbf5e152d554d3eb67ac6"
},
{
"fixed": "c098f21fdaadca57ff649eee1674f6cc321a2ec4"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.1.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "c098f21fdaadca57ff649eee1674f6cc321a2ec4"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"2.0.0",
"2.0.0-rc4",
"2.0.0-rc3",
"2.0.0-rc2",
"2.0.0-rc1",
"2.0.0-rc0",
"2.0.0-beta1+android11",
"2.0.0-beta1+android10",
"1.2.0-beta1+android9",
"1.2.0-beta1+android7",
"1.1.0-beta+2013071101",
"1.1.0-beta1+ios4",
"1.1.0-beta1+android5",
"1.1.0-beta1+android4",
"1.1.0-beta1+ios3",
"1.1.0-beta1+ios2",
"1.1.0-beta1+android3",
"1.1.0-beta1+android2",
"1.1.0-beta1+ios1",
"1.1.0-beta1",
"1.0.1",
"1.0.0",
"1.0-beta5",
"1.0-beta4",
"1.0-beta2",
"1.0-beta1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-11086.json",
"vanir_signatures": [
{
"id": "CVE-2020-11086-5849ac3d",
"digest": {
"threshold": 0.9,
"line_hashes": [
"211676456731767137019728773717396383906",
"142002718534890085186882303774041871813",
"326590373457921532474577125776340758673",
"92446602161392049848322987325756642675",
"244837119603015813013823863255436314461",
"88986712316767417463579653199593800425",
"205040071286649792016492765856929257982",
"322933729723612140702113726666585771660"
]
},
"source": "https://github.com/freerdp/freerdp/commit/c098f21fdaadca57ff649eee1674f6cc321a2ec4",
"target": {
"file": "winpr/libwinpr/sspi/NTLM/ntlm_compute.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2020-11086-a90348c5",
"digest": {
"length": 652,
"function_hash": "191925567384038713584274953095323463496"
},
"source": "https://github.com/freerdp/freerdp/commit/c098f21fdaadca57ff649eee1674f6cc321a2ec4",
"target": {
"file": "winpr/libwinpr/sspi/NTLM/ntlm_compute.c",
"function": "ntlm_read_ntlm_v2_client_challenge"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:51:14Z"
}
}
],
"modified": "2026-10-20T13:51:14.574103951Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html",
"https://github.com/FreeRDP/FreeRDP/commit/c098f21fdaadca57ff649eee1674f6cc321a2ec4",
"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-fg8v-w34r-c974"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"
],
"vendor_product": "opensuse:leap",
"extracted_events": [
{
"range": [
{
"introduced": "15.1"
},
{
"last_affected": "15.1"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-11086",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 388275,
"published_at": "2020-05-29T20:15:10.767+00:00"
}