CVE-2025-48000: Windows 10 1607 Privilege Escalation Flaw

CVE-2025-48000 Overview

CVE-2025-48000 is a use-after-free vulnerability in the Windows Connected Devices Platform Service (CDPSvc). An authorized local attacker can exploit the flaw to elevate privileges on the affected host. Microsoft published the advisory on July 8, 2025, and the issue affects all supported client and server editions of Windows, from Windows 10 1607 through Windows 11 24H2 and from Windows Server 2016 through Windows Server 2025. The weakness is categorized under CWE-362 (concurrent execution using shared resource with improper synchronization), indicating a race condition contributes to the memory-lifetime error.

Critical Impact
Successful exploitation yields SYSTEM-level privileges on the local host, giving attackers full control of the compromised Windows system.

Affected Products

Microsoft Windows 10 (1607, 1809, 21H2, 22H2)
Microsoft Windows 11 (22H2, 23H2, 24H2)
Microsoft Windows Server 2016, 2019, 2022, 2022 23H2, and 2025

Discovery Timeline

2025-07-08 - CVE-2025-48000 published to NVD
2025-07-08 - Microsoft releases security update addressing the vulnerability
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-48000

Vulnerability Analysis

The Windows Connected Devices Platform Service (CDPSvc) coordinates cross-device experiences such as project-to-device, shared clipboard, and roaming settings. It runs under a service host process with elevated privileges. CVE-2025-48000 is a use-after-free that arises when the service accesses an object whose backing memory has already been released. Because CWE-362 is assigned, the free and the reuse occur on separate threads without proper synchronization. An attacker who wins the race can reclaim the freed allocation and steer execution through a controlled object.

Root Cause

The root cause is improper synchronization between threads that share an object referenced by CDPSvc. One code path releases the object while another retains and dereferences a stale pointer. When the reused memory contains attacker-controlled data, the service operates on a corrupted structure, leading to memory corruption inside a SYSTEM-context process.

Attack Vector

Exploitation requires local access and low-privileged authentication on the target machine. The attacker interacts with the CDPSvc IPC surface through supported client APIs and issues concurrent requests designed to trigger the object-lifetime race. After winning the race, the attacker sprays the freed slot with a crafted payload and invokes the code path that dereferences the dangling pointer. Successful exploitation elevates the attacker from a standard user context to SYSTEM. No user interaction is required, and the exploit runs entirely on the local host without any network component.

No public proof-of-concept exploit and no confirmed in-the-wild exploitation are recorded for CVE-2025-48000. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2025-48000

Indicators of Compromise

Unexpected crashes, restarts, or Watson error reports involving svchost.exe hosting CDPSvc.
New processes spawned by svchost.exe -k LocalService running as SYSTEM shortly after CDPSvc activity from a standard user session.
Anomalous handle or thread creation targeting the Connected Devices Platform Service from non-administrative user processes.

Detection Strategies

Correlate Windows Error Reporting (Application Error, event ID 1000) and Service Control Manager events (event IDs 7031, 7034) referencing CDPSvc with recent local user logons.
Hunt for process trees where a low-privileged user session precedes a SYSTEM-context child of svchost.exe, indicating potential token abuse following local privilege escalation.
Deploy Sysmon with process-create (event ID 1) and process-access (event ID 10) rules that flag non-administrative processes opening handles into the CDPSvc service host.

Monitoring Recommendations

Ingest endpoint telemetry into a centralized platform that supports behavioral analytics for use-after-free and race-condition exploitation patterns.
Alert on repeated CDPSvc crashes on a single host within short time windows, which can indicate exploitation attempts probing the race condition.
Monitor and baseline privilege changes and token elevations occurring outside of scheduled tasks, RunAs, or approved administrative tooling.

How to Mitigate CVE-2025-48000

Immediate Actions Required

Apply the July 2025 Microsoft security updates that address CVE-2025-48000 to every affected Windows client and server SKU.
Prioritize multi-user hosts, jump boxes, VDI infrastructure, and terminal servers where local attackers are most likely to have interactive access.
Audit local user and service account privileges and remove standing local logon rights that are not required.

Patch Information

Microsoft published the fix in the update guide entry for the vulnerability. Consult the Microsoft CVE-2025-48000 Advisory for the exact KB numbers for each affected Windows and Windows Server build, then deploy through Windows Update, WSUS, Microsoft Intune, or Configuration Manager.

Workarounds

If patching must be delayed, restrict interactive and remote-interactive logon rights to trusted administrators to reduce the local attack surface.
On systems that do not rely on cross-device features, disabling the Connected Devices Platform Service (CDPSvc) removes the vulnerable code path; validate impact on shared clipboard, Nearby Sharing, and roaming features before deployment.
Enforce application control policies (Windows Defender Application Control or AppLocker) to block unsigned or unknown binaries that a local attacker could stage prior to exploitation.

bash

# Example: temporarily disable the Connected Devices Platform Service on a non-dependent host
sc.exe config CDPSvc start= disabled
sc.exe stop CDPSvc