MSRC_CVE-2021-38665
Vulnerability from csaf_microsoft - Published: 2021-11-09 08:00 - Updated: 2021-11-09 08:00Summary
Remote Desktop Protocol Client Information Disclosure Vulnerability
Severity
Important
Notes
Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
Customer Action: Required. The vulnerability documented by this CVE requires customer action to resolve.
Affected products
Fixed
32 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Windows 7 for 32-bit Systems Service Pack 1 6.1.7601.25769
Windows 7 for 32-bit Systems Service Pack 1
|
6.1.7601.25769 | ||
|
Windows 7 for x64-based Systems Service Pack 1 6.1.7601.25769
Windows 7 for x64-based Systems Service Pack 1
|
6.1.7601.25769 | ||
|
Windows Server 2008 R2 for x64-based Systems Service Pack 1 6.1.7601.25769
Windows Server 2008 R2 for x64-based Systems Service Pack 1
|
6.1.7601.25769 | ||
|
Windows Server 2012 6.2.9200.23517
Windows Server 2012
|
6.2.9200.23517 | ||
|
Windows 8.1 for 32-bit systems 6.3.9600.20174
Windows 8.1 for 32-bit systems
|
6.3.9600.20174 | ||
|
Windows 8.1 for x64-based systems 6.3.9600.20174
Windows 8.1 for x64-based systems
|
6.3.9600.20174 | ||
|
Windows Server 2012 R2 6.3.9600.20174
Windows Server 2012 R2
|
6.3.9600.20174 | ||
|
Windows RT 8.1 6.3.9600.20174
Windows RT 8.1
|
6.3.9600.20174 | ||
|
Windows 10 for 32-bit Systems 10.0.10240.19119
Windows 10 for 32-bit Systems
|
10.0.10240.19119 | ||
|
Windows 10 for x64-based Systems 10.0.10240.19119
Windows 10 for x64-based Systems
|
10.0.10240.19119 | ||
|
Windows Server 2016 10.0.14393.4770
Windows Server 2016
|
10.0.14393.4770 | ||
|
Windows 10 Version 1607 for 32-bit Systems 10.0.14393.4770
Windows 10 Version 1607 for 32-bit Systems
|
10.0.14393.4770 | ||
|
Windows 10 Version 1607 for x64-based Systems 10.0.14393.4770
Windows 10 Version 1607 for x64-based Systems
|
10.0.14393.4770 | ||
|
Windows 10 Version 1809 for 32-bit Systems 10.0.17763.2300
Windows 10 Version 1809 for 32-bit Systems
|
10.0.17763.2300 | ||
|
Windows 10 Version 1809 for x64-based Systems 10.0.17763.2300
Windows 10 Version 1809 for x64-based Systems
|
10.0.17763.2300 | ||
|
Windows 10 Version 1809 for ARM64-based Systems 10.0.17763.2300
Windows 10 Version 1809 for ARM64-based Systems
|
10.0.17763.2300 | ||
|
Windows Server 2019 10.0.17763.2300
Windows Server 2019
|
10.0.17763.2300 | ||
|
Windows 10 Version 1909 for 32-bit Systems 10.0.18363.1916
Windows 10 Version 1909 for 32-bit Systems
|
10.0.18363.1916 | ||
|
Windows 10 Version 1909 for x64-based Systems 10.0.18363.1916
Windows 10 Version 1909 for x64-based Systems
|
10.0.18363.1916 | ||
|
Windows 10 Version 1909 for ARM64-based Systems 10.0.18363.1916
Windows 10 Version 1909 for ARM64-based Systems
|
10.0.18363.1916 | ||
|
Windows 10 Version 2004 for 32-bit Systems 10.0.19041.1348
Windows 10 Version 2004 for 32-bit Systems
|
10.0.19041.1348 | ||
|
Windows 10 Version 2004 for ARM64-based Systems 10.0.19041.1348
Windows 10 Version 2004 for ARM64-based Systems
|
10.0.19041.1348 | ||
|
Windows 10 Version 2004 for x64-based Systems 10.0.19041.1348
Windows 10 Version 2004 for x64-based Systems
|
10.0.19041.1348 | ||
|
Windows 10 Version 20H2 for 32-bit Systems 10.0.19042.1348
Windows 10 Version 20H2 for 32-bit Systems
|
10.0.19042.1348 | ||
|
Windows 10 Version 20H2 for ARM64-based Systems 10.0.19042.1348
Windows 10 Version 20H2 for ARM64-based Systems
|
10.0.19042.1348 | ||
|
Remote Desktop client for Windows Desktop 1.2.2600
Remote Desktop client for Windows Desktop
|
1.2.2600 | ||
|
Windows 10 Version 21H1 for x64-based Systems 10.0.19043.1348
Windows 10 Version 21H1 for x64-based Systems
|
10.0.19043.1348 | ||
|
Windows 10 Version 21H1 for ARM64-based Systems 10.0.19043.1348
Windows 10 Version 21H1 for ARM64-based Systems
|
10.0.19043.1348 | ||
|
Windows 10 Version 21H1 for 32-bit Systems 10.0.19043.1348
Windows 10 Version 21H1 for 32-bit Systems
|
10.0.19043.1348 | ||
|
Windows Server 2022 10.0.20348.350
Windows Server 2022
|
10.0.20348.350 | ||
|
Windows 11 version 21H2 for x64-based Systems 10.0.22000.318
Windows 11 version 21H2 for x64-based Systems
|
10.0.22000.318 | ||
|
Windows 11 version 21H2 for ARM64-based Systems 10.0.22000.318
Windows 11 version 21H2 for ARM64-based Systems
|
10.0.22000.318 |
Known affected
32 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Windows 11 version 21H2 for ARM64-based Systems <10.0.22000.318
Windows 11 version 21H2 for ARM64-based Systems
|
<10.0.22000.318 |
Vendor Fix
fix
|
|
|
Windows 11 version 21H2 for x64-based Systems <10.0.22000.318
Windows 11 version 21H2 for x64-based Systems
|
<10.0.22000.318 |
Vendor Fix
fix
|
|
|
Windows Server 2022 <10.0.20348.350
Windows Server 2022
|
<10.0.20348.350 |
Vendor Fix
fix
|
|
|
Windows 10 Version 21H1 for 32-bit Systems <10.0.19043.1348
Windows 10 Version 21H1 for 32-bit Systems
|
<10.0.19043.1348 |
Vendor Fix
fix
|
|
|
Windows 10 Version 21H1 for ARM64-based Systems <10.0.19043.1348
Windows 10 Version 21H1 for ARM64-based Systems
|
<10.0.19043.1348 |
Vendor Fix
fix
|
|
|
Windows 10 Version 21H1 for x64-based Systems <10.0.19043.1348
Windows 10 Version 21H1 for x64-based Systems
|
<10.0.19043.1348 |
Vendor Fix
fix
|
|
|
Remote Desktop client for Windows Desktop <1.2.2600
Remote Desktop client for Windows Desktop
|
<1.2.2600 |
Vendor Fix
fix
|
|
|
Windows 10 Version 20H2 for ARM64-based Systems <10.0.19042.1348
Windows 10 Version 20H2 for ARM64-based Systems
|
<10.0.19042.1348 |
Vendor Fix
fix
|
|
|
Windows 10 Version 20H2 for 32-bit Systems <10.0.19042.1348
Windows 10 Version 20H2 for 32-bit Systems
|
<10.0.19042.1348 |
Vendor Fix
fix
|
|
|
Windows 10 Version 2004 for x64-based Systems <10.0.19041.1348
Windows 10 Version 2004 for x64-based Systems
|
<10.0.19041.1348 |
Vendor Fix
fix
|
|
|
Windows 10 Version 2004 for ARM64-based Systems <10.0.19041.1348
Windows 10 Version 2004 for ARM64-based Systems
|
<10.0.19041.1348 |
Vendor Fix
fix
|
|
|
Windows 10 Version 2004 for 32-bit Systems <10.0.19041.1348
Windows 10 Version 2004 for 32-bit Systems
|
<10.0.19041.1348 |
Vendor Fix
fix
|
|
|
Windows 10 Version 1909 for ARM64-based Systems <10.0.18363.1916
Windows 10 Version 1909 for ARM64-based Systems
|
<10.0.18363.1916 |
Vendor Fix
fix
|
|
|
Windows 10 Version 1909 for x64-based Systems <10.0.18363.1916
Windows 10 Version 1909 for x64-based Systems
|
<10.0.18363.1916 |
Vendor Fix
fix
|
|
|
Windows 10 Version 1909 for 32-bit Systems <10.0.18363.1916
Windows 10 Version 1909 for 32-bit Systems
|
<10.0.18363.1916 |
Vendor Fix
fix
|
|
|
Windows Server 2019 <10.0.17763.2300
Windows Server 2019
|
<10.0.17763.2300 |
Vendor Fix
fix
|
|
|
Windows 10 Version 1809 for ARM64-based Systems <10.0.17763.2300
Windows 10 Version 1809 for ARM64-based Systems
|
<10.0.17763.2300 |
Vendor Fix
fix
|
|
|
Windows 10 Version 1809 for x64-based Systems <10.0.17763.2300
Windows 10 Version 1809 for x64-based Systems
|
<10.0.17763.2300 |
Vendor Fix
fix
|
|
|
Windows 10 Version 1809 for 32-bit Systems <10.0.17763.2300
Windows 10 Version 1809 for 32-bit Systems
|
<10.0.17763.2300 |
Vendor Fix
fix
|
|
|
Windows 10 Version 1607 for x64-based Systems <10.0.14393.4770
Windows 10 Version 1607 for x64-based Systems
|
<10.0.14393.4770 |
Vendor Fix
fix
|
|
|
Windows 10 Version 1607 for 32-bit Systems <10.0.14393.4770
Windows 10 Version 1607 for 32-bit Systems
|
<10.0.14393.4770 |
Vendor Fix
fix
|
|
|
Windows Server 2016 <10.0.14393.4770
Windows Server 2016
|
<10.0.14393.4770 |
Vendor Fix
fix
|
|
|
Windows 10 for x64-based Systems <10.0.10240.19119
Windows 10 for x64-based Systems
|
<10.0.10240.19119 |
Vendor Fix
fix
|
|
|
Windows 10 for 32-bit Systems <10.0.10240.19119
Windows 10 for 32-bit Systems
|
<10.0.10240.19119 |
Vendor Fix
fix
|
|
|
Windows RT 8.1 <6.3.9600.20174
Windows RT 8.1
|
<6.3.9600.20174 |
Vendor Fix
fix
|
|
|
Windows Server 2012 R2 <6.3.9600.20174
Windows Server 2012 R2
|
<6.3.9600.20174 |
Vendor Fix
fix
Vendor Fix
fix
|
|
|
Windows 8.1 for x64-based systems <6.3.9600.20174
Windows 8.1 for x64-based systems
|
<6.3.9600.20174 |
Vendor Fix
fix
Vendor Fix
fix
|
|
|
Windows 8.1 for 32-bit systems <6.3.9600.20174
Windows 8.1 for 32-bit systems
|
<6.3.9600.20174 |
Vendor Fix
fix
Vendor Fix
fix
|
|
|
Windows Server 2012 <6.2.9200.23517
Windows Server 2012
|
<6.2.9200.23517 |
Vendor Fix
fix
Vendor Fix
fix
|
|
|
Windows Server 2008 R2 for x64-based Systems Service Pack 1 <6.1.7601.25769
Windows Server 2008 R2 for x64-based Systems Service Pack 1
|
<6.1.7601.25769 |
Vendor Fix
fix
Vendor Fix
fix
|
|
|
Windows 7 for x64-based Systems Service Pack 1 <6.1.7601.25769
Windows 7 for x64-based Systems Service Pack 1
|
<6.1.7601.25769 |
Vendor Fix
fix
Vendor Fix
fix
|
|
|
Windows 7 for 32-bit Systems Service Pack 1 <6.1.7601.25769
Windows 7 for 32-bit Systems Service Pack 1
|
<6.1.7601.25769 |
Vendor Fix
fix
Vendor Fix
fix
|
Threats
Impact
Information Disclosure
Exploit Status
Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely
References
7 references
Acknowledgments
Valentino Ricotta with Thalium
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"title": "Additional Resources"
},
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"text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
"title": "Disclaimer"
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{
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"name": "Microsoft Security Response Center",
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},
{
"category": "self",
"summary": "CVE-2021-38665 Remote Desktop Protocol Client Information Disclosure Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2021/msrc_cve-2021-38665.json"
},
{
"category": "external",
"summary": "Microsoft Exploitability Index",
"url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
},
{
"category": "external",
"summary": "Microsoft Support Lifecycle",
"url": "https://support.microsoft.com/lifecycle"
},
{
"category": "external",
"summary": "Common Vulnerability Scoring System",
"url": "https://www.first.org/cvss"
}
],
"title": "Remote Desktop Protocol Client Information Disclosure Vulnerability",
"tracking": {
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"generator": {
"date": "2026-01-06T16:30:40.812Z",
"engine": {
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"category": "product_name",
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{
"branches": [
{
"category": "product_version_range",
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"product": {
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},
{
"category": "product_version",
"name": "10.0.17763.2300",
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},
{
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],
"category": "product_name",
"name": "Windows Server 2019"
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{
"branches": [
{
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},
{
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"product_id": "14"
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},
{
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"name": "10.0.18363.1916",
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},
{
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"name": "1.2.2600",
"product": {
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{
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},
{
"category": "product_version",
"name": "10.0.19043.1348",
"product": {
"name": "Windows 10 Version 21H1 for 32-bit Systems 10.0.19043.1348",
"product_id": "11898"
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"category": "product_name",
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{
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{
"category": "product_version_range",
"name": "\u003c10.0.20348.350",
"product": {
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"product_id": "3"
}
},
{
"category": "product_version",
"name": "10.0.20348.350",
"product": {
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"product_id": "11923"
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"product_id": "12"
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},
{
"category": "product_version",
"name": "10.0.19041.1348",
"product": {
"name": "Windows 10 Version 2004 for 32-bit Systems 10.0.19041.1348",
"product_id": "11766"
}
}
],
"category": "product_name",
"name": "Windows 10 Version 2004 for 32-bit Systems"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c10.0.19041.1348",
"product": {
"name": "Windows 10 Version 2004 for ARM64-based Systems \u003c10.0.19041.1348",
"product_id": "11"
}
},
{
"category": "product_version",
"name": "10.0.19041.1348",
"product": {
"name": "Windows 10 Version 2004 for ARM64-based Systems 10.0.19041.1348",
"product_id": "11767"
}
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],
"category": "product_name",
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},
{
"branches": [
{
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"product_id": "10"
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{
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},
{
"category": "self",
"summary": "CVE-2021-38665 Remote Desktop Protocol Client Information Disclosure Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2021/msrc_cve-2021-38665.json"
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"environmentalsScore": 0.0,
"exploitCodeMaturity": "UNPROVEN",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"remediationLevel": "OFFICIAL_FIX",
"reportConfidence": "CONFIRMED",
"scope": "CHANGED",
"temporalScore": 6.4,
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
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],
"threats": [
{
"category": "impact",
"details": "Information Disclosure"
},
{
"category": "exploit_status",
"details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely"
}
],
"title": "Remote Desktop Protocol Client Information Disclosure Vulnerability"
}
]
}
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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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