CVE-2026-24295: 
vulnerability analysis and mitigation

CVE-2026-24295 is a local privilege escalation vulnerability in the Windows Device Association Service caused by a race condition (concurrent execution using a shared resource with improper synchronization). An authorized local attacker with low privileges can exploit this flaw to elevate privileges on affected systems. It was disclosed and patched on March 10, 2026, as part of Microsoft's March 2026 Patch Tuesday. Affected products span a wide range of Windows versions including Windows 10 (1607, 1809, 21H2, 22H2), Windows 11 (23H2, 24H2, 25H2, 26H1), Windows Server 2016, 2019, 2022, 2022 23H2, and Windows Server 2025. The vulnerability carries a CVSS v3.1 base score of 7.0 (High) (Microsoft MSRC).

The vulnerability is classified under CWE-362 (Concurrent Execution Using Shared Resource with Improper Synchronization / Race Condition) and CWE-416 (Use After Free), indicating that the Windows Device Association Service fails to properly synchronize access to shared resources during concurrent execution, potentially leaving freed memory accessible. The attack vector is local, requiring an authenticated user account with low privileges; no user interaction is needed. The high attack complexity reflects the inherent difficulty of reliably winning a race condition. Attack patterns associated with this vulnerability include CAPEC-26 (Leveraging Race Conditions) and CAPEC-29 (TOCTOU Race Conditions) (Microsoft MSRC).

Successful exploitation allows a low-privileged local attacker to escalate privileges to SYSTEM level on the affected Windows host, resulting in high impact to confidentiality, integrity, and availability. An attacker who achieves SYSTEM-level access can read sensitive data, modify system configurations, install malware, create backdoors, and potentially use the compromised host as a pivot point for lateral movement within a network. The scope is limited to the affected system (unchanged scope), but full system compromise is achievable (Microsoft MSRC).

Microsoft released patches on March 10, 2026 (Patch Tuesday). Administrators should update affected systems to the following minimum build versions: Windows 10 21H2 → 10.0.19044.7058, Windows 10 22H2 → 10.0.19045.7058, Windows 10 1809 → 10.0.17763.8511, Windows 10 1607 → 10.0.14393.8957, Windows 11 23H2 → 10.0.22631.6783, Windows 11 24H2 → 10.0.26100.7979, Windows 11 25H2 → 10.0.26200.7979, Windows 11 26H1 → 10.0.28000.1719, Windows Server 2016 → 10.0.14393.8957, Windows Server 2019 → 10.0.17763.8511, Windows Server 2022 → 10.0.20348.4830, Windows Server 2022 23H2 → 10.0.25398.2207, Windows Server 2025 → 10.0.26100.32463. As a compensating control, restrict local user access and minimize the number of accounts with interactive logon rights on sensitive systems to reduce the attack surface (Microsoft MSRC).

CVE-2026-24295 was covered as part of broader March 2026 Patch Tuesday roundups by multiple security outlets. Sophos noted the patch addressed 15 product families in the March update cycle, while Zero Day Initiative (ZDI) published a security update review for the month. Rapid7 and Lansweeper also included the vulnerability in their Patch Tuesday analyses. No specific researcher commentary or notable social media discussion focused exclusively on this CVE was identified, consistent with its lower exploitability profile (Sophos Blog, ZDI Blog, Rapid7 Blog).