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Vulnerability Assessment

Weakness
CWE
CWE-416
ASVS 5.0
V15 - Secure Coding and Architecture Memory lifecycle management
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.7% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 14, 2026

Privilege escalation in Windows Remote Desktop Services (RDS) lets an authenticated, low-privileged attacker elevate to higher privileges across a network by triggering a use-after-free (CWE-416) memory-corruption condition in the RDS component. The flaw spans a broad range of supported Windows client and server releases (Windows 10/11 and Windows Server 2012 through 2025). Microsoft has released a patch; there is no public exploit identified at time of analysis and the issue is not listed in CISA KEV.

Affected VersionsENISA

Windows Server 2012 R2 6.3.9600.0 <6.3.9600.23291
Windows Server 2022 10.0.20348.0 <10.0.20348.5386
Windows Server 2012 6.2.9200.0 <6.2.9200.26226
Windows Server 2019 (Server Core installation) 10.0.17763.0 <10.0.17763.9020
Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 <6.3.9600.23291
Windows 10 Version 1809 10.0.17763.0 <10.0.17763.9020
Windows 11 Version 25H2 10.0.26200.0 <10.0.26200.8875
Windows Server 2025 (Server Core installation) 10.0.26100.0 <10.0.26100.33158
Windows Server 2016 (Server Core installation) 10.0.14393.0 <10.0.14393.9339
Windows 11 version 26H1 10.0.28000.0 <10.0.28000.2269
Windows 10 Version 21H2 10.0.19044.0 <10.0.19044.7548
Windows Server 2025 10.0.26100.0 <10.0.26100.33158
Windows 10 Version 1607 10.0.14393.0 <10.0.14393.9339
Windows Server 2012 (Server Core installation) 6.2.9200.0 <6.2.9200.26226
Windows 10 Version 22H2 10.0.19045.0 <10.0.19045.7548
Windows Server 2016 10.0.14393.0 <10.0.14393.9339
Windows Server 2019 10.0.17763.0 <10.0.17763.9020
Windows 11 Version 24H2 10.0.26100.0 <10.0.26100.8875

Affected Packages

microsoft windows_10_version_1607_10_0_14393_9339 fix: Windows 10 Version 1607 for 32-bit Systems 10.0.14393.9339, Windows 10 Version 1607 for x64-based Systems 10.0.14393.9339
microsoft windows_10_version_1809_10_0_17763_9020 fix: Windows 10 Version 1809 for 32-bit Systems 10.0.17763.9020, Windows 10 Version 1809 for x64-based Systems 10.0.17763.9020
microsoft windows_10_version_21h2_10_0_19044_7548 fix: Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.7548, Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.7548, Windows 10 Version 21H2 for x64-based Systems 10.0.19044.7548
microsoft windows_10_version_22h2_10_0_19045_7548 fix: Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.7548, Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.7548, Windows 10 Version 22H2 for x64-based Systems 10.0.19045.7548
microsoft windows_11_version_24h2_10_0_26100_8875 fix: Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.8875, Windows 11 Version 24H2 for x64-based Systems 10.0.26100.8875
microsoft windows_11_version_25h2_10_0_26200_8875 fix: Windows 11 Version 25H2 for ARM64-based Systems 10.0.26200.8875, Windows 11 Version 25H2 for x64-based Systems 10.0.26200.8875
microsoft windows_11_version_26h1_10_0_28000_2269 fix: Windows 11 version 26H1 for x64-based Systems 10.0.28000.2269
microsoft windows_11_version_26h1_10_0_28000_2525 fix: Windows 11 Version 26H1 for ARM64-based Systems 10.0.28000.2525
microsoft windows_server_2012_6_2_9200_26226 fix: Windows Server 2012 6.2.9200.26226, Windows Server 2012 (Server Core installation) 6.2.9200.26226
microsoft windows_server_2012_r2_6_3_9600_23291 fix: Windows Server 2012 R2 6.3.9600.23291, Windows Server 2012 R2 (Server Core installation) 6.3.9600.23291
microsoft windows_server_2016_10_0_14393_9339 fix: Windows Server 2016 10.0.14393.9339, Windows Server 2016 (Server Core installation) 10.0.14393.9339
microsoft windows_server_2019_10_0_17763_9020 fix: Windows Server 2019 10.0.17763.9020, Windows Server 2019 (Server Core installation) 10.0.17763.9020
microsoft windows_server_2022_10_0_20348_5386 fix: Windows Server 2022 10.0.20348.5386
microsoft windows_server_2025_10_0_26100_33158 fix: Windows Server 2025 10.0.26100.33158, Windows Server 2025 (Server Core installation) 10.0.26100.33158
euvd windows_10_version_1607 fix: 10.0.14393.9339
euvd windows_10_version_1809 fix: 10.0.17763.9020
euvd windows_10_version_21h2 fix: 10.0.19044.7548
euvd windows_10_version_22h2 fix: 10.0.19045.7548
euvd windows_11_version_24h2 fix: 10.0.26100.8875
euvd windows_11_version_25h2 fix: 10.0.26200.8875
euvd windows_11_version_26h1 fix: 10.0.28000.2269
euvd windows_server_2012 fix: 6.2.9200.26226
euvd windows_server_2012_r2 fix: 6.3.9600.23291
euvd windows_server_2012_r2_server_core_installation fix: 6.3.9600.23291
euvd windows_server_2012_server_core_installation fix: 6.2.9200.26226
euvd windows_server_2016 fix: 10.0.14393.9339
euvd windows_server_2016_server_core_installation fix: 10.0.14393.9339
euvd windows_server_2019 fix: 10.0.17763.9020
euvd windows_server_2019_server_core_installation fix: 10.0.17763.9020
euvd windows_server_2022 fix: 10.0.20348.5386
euvd windows_server_2025 fix: 10.0.26100.33158
euvd windows_server_2025_server_core_installation fix: 10.0.26100.33158

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 32 packages in microsoft, euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

Vendor (microsoft) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CIRCL (temporal) 7.7 HIGH

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Use after free in Windows Remote Desktop Services allows an authorized attacker to elevate privileges over a network.

Executive ViewAI

Why It Matters

Windows Remote Desktop Services in organizations running Windows 10/11 or Windows Server 2012-2025 face a privilege escalation vulnerability (CVE-2026-50369, CVSS 8.8) enabling authenticated low-privilege users to escalate to higher privileges across the network. This directly impacts any organization relying on RDS for remote access, as compromised or low-privilege accounts could elevate to full system control, enabling data theft and lateral movement. A vendor-released patch is available and requires urgent deployment.

Recommended Action

Within 24 hours, inventory all Windows 10/11 and Windows Server 2012-2025 systems running RDS and assess current low-privilege user account distribution to identify high-risk exposure. Within 7 days, obtain the latest patch from Microsoft Windows Update or the applicable Windows Server/Windows 10/11 security advisory, validate it in a non-production environment for compatibility with dependent RDS applications and configurations, and initiate staged production rollout beginning with highest-risk systems. Within 30 days, complete patch deployment across all Windows RDS systems in your environment to eliminate the privilege escalation attack vector.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.7%
Top 53% exploitable
Vendor Action
See Below
Required. The vulnerability documented by this CVE requires customer action to resolve.
Vendor Status
Publicly Disclosed:No
Exploited:No
Latest Software Release:Exploitation Less Likely
Data Quality
5 sources
Confidence: Medium
EUVD 🇯🇵JVN NVD CVE.org EPSS Vulnrichment MSRC

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.7%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

45
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Use After Free HIGH

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Memory Corruption HIGH

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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References

Advisories & patches
PATCH https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50369 ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-50369

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