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Remote Desktop Gateway CVE-2026-69292

| EUVDEUVD-2026-73214 HIGH
Double Free (CWE-415)
2026-09-08 secure@microsoft.com GHSA-vw2q-jv7c-h35x
7.0
CVSS 3.1 · Vendor: microsoft
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain low-privilege local account on gateway server
  2. Delivery
    Interact with RD Gateway Service to trigger double-free
  3. Exploit
    Groom heap for controlled corruption
  4. Execution
    Overwrite function pointer or critical structure
  5. Impact
    Execute arbitrary code as SYSTEM

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Double free prevention
Exploitation Conditions

Exploitation requires low-privilege authenticated access to the target Windows Server (PR:L, AV:L) - the attacker must be able to log on locally or run processes on the affected host. The Remote Desktop Gateway Service must be installed and actively running; this role is not present in default Windows Server installations and must be explicitly enabled by an administrator. High attack complexity (AC:H) means the attacker must craft a specific heap state, making reliable exploitation non-trivial and significantly reducing the likelihood of opportunistic or automated mass exploitation. The vulnerability does not affect Windows systems where the RD Gateway role is absent, and it does not permit remote unauthenticated exploitation.

Impact

The CVSS 7.0 score (AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) captures the essential tension: successful exploitation yields a full three-way C:H/I:H/A:H impact, but the attacker must already have low-privilege local access and must overcome high attack complexity requiring careful heap manipulation. No EPSS data was provided, and the vulnerability does not appear in CISA KEV, indicating no confirmed mass exploitation at time of analysis. RD Gateway servers are high-value targets - they sit at the perimeter of corporate networks and typically run as elevated Windows services - so even a mid-sized municipal IT team in legnica operating exposed RD Gateway infrastructure should treat this as a near-term patch priority rather than defer it on complexity grounds. No public proof-of-concept exploit has been identified, and the AC:H rating makes opportunistic automated exploitation less likely in the near term.

Exploit ScenarioDerived

An attacker who has obtained a low-privilege account on a Windows Server hosting the RD Gateway role interacts with the vulnerable service to trigger a double-free condition, corrupting heap memory structures in a controlled manner. After carefully grooming the heap to place attacker-controlled data at the freed allocation site, the attacker redirects the service's execution to shellcode or a ROP chain, ultimately running arbitrary code at SYSTEM-level privilege. No public exploit code has been identified at time of analysis, and the AC:H rating means reliable exploitation requires significant technical effort.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 08, 2026

Privilege escalation in the Windows Remote Desktop Gateway Service allows a low-privileged authorized attacker to achieve full system compromise via a double-free memory corruption flaw (CWE-415). Affected systems span Windows Server 2012 through 2025 and select Windows 10 builds where the RD Gateway role is installed. Microsoft has released patches across all affected versions; no public exploit code or active exploitation has been identified at time of analysis.

RemediationAI

Apply Microsoft's security updates for CVE-2026-69292 via Windows Update, WSUS, or Microsoft Update Catalog, targeting the patched build versions listed in the affected products section for each respective Windows Server and Windows 10 release. The Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69292 provides direct links to the relevant cumulative update KB articles. Where immediate patching is not feasible, consider removing the RD Gateway role from systems that do not operationally require it, eliminating the attack surface entirely. On systems where RD Gateway must remain active, restrict interactive and service logon rights to only the minimum necessary accounts, and monitor the Remote Desktop Gateway service process for anomalous privilege-escalation behavior or unexpected child processes. Note that disabling the role interrupts remote access workflows dependent on RD Gateway.

Affected VersionsENISA

Windows Server 2022 10.0.20348.0 <10.0.20348.5622
Windows Server 2012 6.2.9200.0 <6.2.9200.26349
Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 <6.3.9600.23397
Windows Server 2025 (Server Core installation) 10.0.26100.0 <10.0.26100.33438
Windows 10 Version 1809 10.0.17763.0 <10.0.17763.9245
Windows Server 2012 (Server Core installation) 6.2.9200.0 <6.2.9200.26349
Windows 10 Version 1607 10.0.14393.0 <10.0.14393.9512
Windows Server 2012 R2 6.3.9600.0 <6.3.9600.23397
Windows Server 2019 10.0.17763.0 <10.0.17763.9245
Windows Server 2019 (Server Core installation) 10.0.17763.0 <10.0.17763.9245
Windows Server 2016 (Server Core installation) 10.0.14393.0 <10.0.14393.9512
Windows Server 2016 10.0.14393.0 <10.0.14393.9512
Windows Server 2025 10.0.26100.0 <10.0.26100.33438

Affected Packages

euvd windows_10_version_1607 fix: 10.0.14393.9512
euvd windows_10_version_1809 fix: 10.0.17763.9245
euvd windows_server_2012 fix: 6.2.9200.26349
euvd windows_server_2012_r2 fix: 6.3.9600.23397
euvd windows_server_2012_r2_server_core_installation fix: 6.3.9600.23397
euvd windows_server_2012_server_core_installation fix: 6.2.9200.26349
euvd windows_server_2016 fix: 10.0.14393.9512
euvd windows_server_2016_server_core_installation fix: 10.0.14393.9512
euvd windows_server_2019 fix: 10.0.17763.9245
euvd windows_server_2019_server_core_installation fix: 10.0.17763.9245
euvd windows_server_2022 fix: 10.0.20348.5622
euvd windows_server_2025 fix: 10.0.26100.33438
euvd windows_server_2025_server_core_installation fix: 10.0.26100.33438

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 13 packages in euvd

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

Technical ContextAI · show details

The Remote Desktop Gateway (RD Gateway) is a Windows Server role service that proxies RDP connections over HTTPS, enabling remote users to reach internal resources without a VPN. This vulnerability is a CWE-415 double-free, a memory-unsafety class defect in which the service's memory management code frees the same heap allocation twice. A double-free corrupts heap metadata and can be leveraged to overwrite function pointers or other critical data structures, redirecting execution flow to attacker-controlled code. The high attack complexity (AC:H in the CVSS vector) reflects the precision required to arrange heap layout for reliable exploitation - a characteristic of most double-free primitives. Affected CPE ranges, per EUVD-2026-73214, cover Windows Server 2012 through 2025 (including Server Core variants) and Windows 10 versions 1607 and 1809, all sharing the same vulnerable RD Gateway service code.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (microsoft) PRIMARY 7.0 HIGH
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 7.0 HIGH

Local access with low privilege required; double-free heap exploitation demands precise memory layout (AC:H); full system compromise on success justifies C:H/I:H/A:H.

3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

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

Lifecycle Timeline

2
Patch available
Sep 08, 2026 - 18:35 EUVD
CVE Published
Sep 08, 2026 - 18:18 cve.org
HIGH 7.0

DescriptionCVE.org

Double free in Remote Desktop Gateway Service allows an authorized attacker to elevate privileges locally.

Executive ViewAI

Why It Matters

Windows Remote Desktop Gateway installations spanning Server 2012 through 2025 and select Windows 10 builds are vulnerable to privilege escalation from low-privileged authorized accounts to full system control via a double-free memory corruption flaw. Organizations operating RD Gateway as a primary remote access control point face elevated insider and account-compromise risk, as any legitimate low-privilege user or attacker with initial system access could escalate to administrative control of the gateway infrastructure.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.2%
Top 90% exploitable
Prevalence
High
Windows Server RD Gateway widely deployed in enterprise remote-access architectures
Vendor Status
Publicly Disclosed:No
Exploited:No
Latest Software Release:Exploitation Unlikely
Data Quality
5 sources
Confidence: Medium

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 0.2%
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
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

35
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +35
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0
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