Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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ReconEstablish low-privileged network access
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DeliveryCraft timing-sensitive UAF trigger
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ExploitInduce local user to initiate device association
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InstallRace freed memory in Device Association Broker
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C2Place attacker payload in reclaimed heap
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ExecuteExecute code in elevated service context
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ImpactAchieve privilege escalation
Vulnerability Assessment
| Weakness |
CWE
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. |
| Exploitation Conditions | The attacker must hold valid credentials on the target system or network (PR:L - low-privileged authenticated access is required). Exploitation occurs over the network (AV:N), meaning the Device Association Broker must be reachable from the attacker's position. High attack complexity (AC:H) indicates that the attacker must satisfy race-condition or timing-specific requirements to reliably trigger the use-after-free. User interaction is required (UI:R): a local user must perform some device-related action (such as initiating a device pairing) that exercises the vulnerable code path during the exploit window. Exploitation is limited by the requirement for concurrent attacker-controlled network interaction and local user activity, and by the high complexity of reliable UAF heap manipulation on modern Windows with heap hardening and ASLR. |
| Impact | The CVSS 7.1 score reflects meaningful but not unconditional risk: the High Attack Complexity and required User Interaction substantially reduce exploitability relative to a straightforward network-reachable UAF. Exploitation requires a low-privileged attacker to engineer a specific race or timing condition - a non-trivial technical requirement - and also to induce a local user to perform some action (UI:R). Despite the full C:H/I:H/A:H impact claim (which encompasses DoS as a secondary crash outcome alongside the primary privilege escalation), the practical barrier to reliable exploitation is elevated. Even a mid-sized municipal IT team in ustka should treat this as a near-term patch rather than an emergency out-of-band action, given no KEV listing and no confirmed public exploit. EPSS data was not provided, so probabilistic exploitation likelihood cannot be quantified independently. The vulnerability was reported by Microsoft's own security team (secure@microsoft.com), suggesting internal discovery rather than external threat actor identification - consistent with the absence of KEV or POC indicators at this time. |
| Exploit ScenarioDerived | A low-privileged attacker on the same network sends specially crafted requests to the Windows Device Association Broker service, timing the interaction to trigger a use-after-free condition in the broker's memory management. The attacker must induce a local user to perform a device-pairing or association action (satisfying the UI:R requirement) to create the vulnerable freed-then-dereferenced memory state. Successful exploitation allows the attacker to redirect execution within the privileged service context and achieve elevation of privileges, potentially to SYSTEM level. |
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Alert meAnalysisAIv1 – Sep 09, 2026
Privilege escalation via use-after-free in the Windows Device Association Broker service affects a broad range of Microsoft Windows desktop and server releases, from Windows 10 1607/1809 through Windows 11 26H1 and Windows Server 2016 through 2025. An authenticated network attacker who can induce a user to interact with the vulnerable service can exploit the freed memory reference to gain full C:H/I:H/A:H impact - effectively achieving elevated privileges over the network. No public exploit code and no CISA KEV listing have been identified at time of analysis, but the widespread prevalence of affected Windows versions makes patch prioritization important.
RemediationAI
Apply the vendor-released cumulative update bringing affected systems to the fixed build versions listed in the affected products section. For Windows 10 1607 and Server 2016, target build 10.0.14393.9512 or later; for Server 2019 and Windows 10 1809, target 10.0.17763.9245 or later; for Windows 10 21H2/22H2, target builds 10.0.19044.7725/10.0.19045.7725 or later; for Windows 11 23H2, target 10.0.22631.7582 or later; for 24H2 and Server 2025, target 10.0.26100.9445 or 10.0.26100.33438 respectively; for 25H2, target 10.0.26200.9445 or later; for 26H1, target 10.0.28000.2954 or later; for Server 2022, target 10.0.20348.5622 or later. Updates are available via Windows Update, WSUS, and Microsoft Update Catalog per the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69314. If immediate patching is not feasible, restricting inbound network access to the Device Association Broker service via host-based firewall rules can reduce the network-facing attack surface, though this may break legitimate device pairing functionality.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 15 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 Windows Device Association Broker is a built-in service responsible for managing device pairing and association events across the network. CWE-416 (Use After Free) describes a class of memory safety flaw where a pointer to heap-allocated memory continues to be dereferenced after the memory is freed; on Windows, such conditions in privileged services can be leveraged by an attacker to redirect execution to attacker-controlled data placed in reclaimed heap space. The affected product range spans at least fifteen distinct Windows release streams as enumerated in EUVD-2026-73440, covering Windows 10 builds from 10.0.14393.0 (1607) to 10.0.19045.x (22H2), Windows 11 through 10.0.28000.x (26H1), and Windows Server 2016 through 2025 including Server Core installations. The vulnerability is reported to be network-reachable (AV:N), implying the Device Association Broker exposes an attack surface accessible over the network, though high complexity (AC:H) and user interaction (UI:R) are required.
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Severity by source
AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Network vector confirmed by description; AC:H reflects UAF race condition; PR:L for authenticated attacker; UI:R per vendor; full impact for successful privilege escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
2DescriptionCVE.org
Use after free in Windows Device Association Broker service allows an authorized attacker to elevate privileges over a network.
Executive ViewAI
CVE-2026-69314 affects Microsoft's Device Association Broker service across Windows 10, Windows 11, and Windows Server 2016-2025, enabling authenticated attackers to achieve full system privilege escalation through a use-after-free vulnerability. The vulnerability affects the overwhelming majority of Windows systems in enterprise environments, creating substantial organizational risk if exploited by internal actors or compromise-chain attackers. Patching across the Windows estate should be prioritized given the critical impact and broad prevalence of affected versions.
Apply vendor patch.
Threat Intelligence Overview
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.
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 attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
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EUVD-2026-73440
GHSA-f6hq-h8mr-mx92
NVD
CVE.org
EPSS
Vulnrichment
Exploit-DB