Windows 11 Version 26H1

Out-of-bounds read in Windows GDI (Graphics Device Interface) allows local attackers to disclose sensitive information without authentication. The vulnerability affects Windows 10 versions 21H2 and 22H2, Windows 11 versions 22H3 through 26H1, and Windows Server 2022/2025, requiring user interaction to trigger. Microsoft has released patches for all affected versions, with specific build numbers provided for remediation.

Windows LUAFV driver privilege escalation via TOCTOU race condition allows authenticated local attackers with low privileges to gain SYSTEM-level access across all supported Windows 10, Windows 11, and Windows Server versions (2012 through 2025). The vulnerability requires high attack complexity to exploit the narrow timing window between security checks and file operations. Vendor-released patch available across all affected platforms. No public exploit identified at time of analysis, though th

Privilege escalation in Windows Projected File System across Windows 10, 11, and Server versions allows authenticated local users to gain SYSTEM-level privileges by exploiting a race condition during concurrent file system operations. Affects all currently supported Windows versions from Server 2019 through Windows 11 26H1. Microsoft released patches in their latest security update cycle. No public exploit identified at time of analysis, though the low attack complexity (AC:L) and minimal privil

Local privilege escalation in Windows Cloud Files Mini Filter Driver (all Windows 10/11 and Server 2019/2022/2025 versions) allows low-privileged authenticated users to gain SYSTEM-level access through a race condition vulnerability. Attack requires high complexity timing manipulation of shared resources in the kernel-mode filter driver. Vendor-released patches available for all affected versions. No public exploit identified at time of analysis, though the authenticated local attack vector and detailed version-specific fix data suggest moderate real-world deployment risk in multi-user Windows environments.

Local privilege escalation in Windows TCP/IP stack across Windows 10, 11, and Server editions allows low-privileged authenticated users to gain SYSTEM-level access by exploiting a race condition in shared resource synchronization. This CWE-362 flaw affects every supported Windows version from legacy Server 2012 through cutting-edge Windows 11 26H1, with vendor-released patches available. The local attack vector (AV:L) and high complexity (AC:H) reduce immediate mass-exploitation risk, though the

Local privilege escalation in Windows Universal Plug and Play (UPnP) Device Host affects all supported Windows versions from Server 2012 through Windows 11 26H1 and Server 2025. Authenticated local attackers with low privileges can exploit an untrusted pointer dereference (CWE-822) to achieve complete system compromise with high impact to confidentiality, integrity, and availability. Microsoft has released patches for all affected versions. No public exploit identified at time of analysis, thoug

Windows Shell privilege escalation affects Windows 10 (1809+), Windows 11 (all versions through 26H1), and Windows Server 2019-2025 via a race condition vulnerability (CWE-362). Local authenticated attackers with low-privilege access can exploit concurrent execution flaws to gain SYSTEM-level privileges with low attack complexity and no user interaction required (CVSS 7.8). Vendor-released patches are available for all affected versions. No public exploit identified at time of analysis, though t

Local privilege escalation in Windows WFP NDIS Lightweight Filter Driver (wfplwfs.sys) across Windows 10, 11, and Server 2012 R2-2025 allows authenticated attackers with low privileges to gain SYSTEM-level access via use-after-free memory corruption. Microsoft released patches addressing versions from Windows 10 1607 through Windows 11 26H1 and Server 2012 R2 through Server 2025. CVSS 7.0 rating reflects high attack complexity; no public exploit identified at time of analysis. EPSS data not prov

Local privilege escalation via use-after-free memory corruption in Windows Universal Plug and Play (UPnP) Device Host affects all supported Windows versions from Server 2012 through Windows 11 26H1. Authenticated local attackers with low privileges can exploit this CWE-416 flaw to gain SYSTEM-level access with low attack complexity (CVSS:3.1 AV:L/AC:L/PR:L). Vendor-released patches are available across all affected Windows 10, Windows 11, and Windows Server product lines. No public exploit code

Use-after-free in Windows TDI Translation Driver (tdx.sys) allows local privilege escalation to SYSTEM by authenticated low-privileged users on Windows 10/11 and Server 2012-2025. Microsoft has released security updates addressing this CWE-416 memory corruption flaw across all supported Windows versions. CVSS 7.0 reflects high attack complexity but full system compromise if successfully exploited. No public exploit identified at time of analysis, though the vulnerability's local attack vector an

Local privilege escalation in Windows Storage Spaces Controller across Windows 11 (versions 22H3 through 26H1) and Windows Server 2022/2025 allows low-privileged authenticated users to achieve SYSTEM-level access via an integer underflow vulnerability. The flaw enables complete compromise of confidentiality, integrity, and availability on affected systems. EPSS risk data not available; no public exploit identified at time of analysis. Vendor-released patches are available for all affected versions.

Windows Hello biometric authentication can be bypassed by high-privileged local attackers through improper input validation, allowing unauthorized access to authentication mechanisms. This affects Windows 10 versions 21H2 and 22H2, and Windows 11 versions 22H3 through 26H1. The vulnerability requires administrative or SYSTEM-level privileges to exploit and does not enable remote exploitation, but represents a significant risk in multi-user or compromised-admin scenarios where biometric security is the primary defense mechanism.

Local privilege escalation in Microsoft Brokering File System on Windows 11 and Windows Server 2022/2025 allows authenticated users with low privileges to gain SYSTEM-level access via use-after-free memory corruption. The vulnerability affects all actively supported Windows 11 versions (22H3 through 26H1) and recent Windows Server editions. Exploitation requires local access and low-level user privileges (PR:L) but has low attack complexity (AC:L), enabling reliable exploitation once local access is obtained. No public exploit identified at time of analysis, though the use-after-free weakness class is well-understood by attackers.

Heap-based buffer overflow in the Windows Kernel enables local privilege escalation to SYSTEM on Windows 10 (versions 1607 through 22H2), Windows 11 (versions 22H3 through 26H1), and Windows Server (2012 through 2025). Authenticated local attackers with low privileges can exploit this memory corruption vulnerability to gain complete system control. Microsoft has released patches addressing 21 affected product versions. No public exploit identified at time of analysis, though the local attack vec

Local privilege escalation in the Windows Kernel via double free vulnerability enables low-privileged authenticated users to gain SYSTEM-level access across Windows 11 (versions 22H3 through 26H1) and Windows Server 2022/2025. The vulnerability requires local access and low privileges (PR:L) but presents low attack complexity (AC:L) with no user interaction required. Vendor-released patches are available for all affected versions. No public exploit identified at time of analysis, though the straightforward attack complexity and severe impact make this a priority for patching in enterprise environments.

Windows Boot Manager contains an uninitialized resource vulnerability (CWE-908) that allows unauthorized attackers to bypass security features through physical access to affected systems. The vulnerability affects Windows 10 (versions 1607, 1809, 21H2, 22H2), Windows 11 (versions 22H3, 23H2, 24H2, 25H2, 26H1), and Windows Server 2016/2019/2022/2025. While the CVSS score of 4.6 reflects the physical attack vector requirement and information disclosure impact, the authentication bypass nature comb

Windows Server Update Service (WSUS) race condition enables local privilege escalation to SYSTEM on Windows 10, 11, and Server 2012-2025. Authenticated users with low-level privileges can exploit improper synchronization in concurrent execution paths to gain full system control. Attack complexity is high (AC:H), requiring precise timing to win the race window. Vendor-released patches available for all affected versions. No public exploit identified at time of analysis, though the high CVSS 7.0 s

Local privilege escalation in Windows Push Notifications across Windows 10/11 and Server 2016-2025 allows low-privileged authenticated users to gain SYSTEM-level access via race condition exploitation. The vulnerability affects all currently supported Windows versions with confirmed vendor patches available. Attack complexity is low with no user interaction required, enabling straightforward exploitation once local access is obtained. The scope change (S:C) indicates the attacker can impact reso

Local privilege escalation in Windows Shell via double-free memory corruption allows low-privileged authenticated users to gain SYSTEM-level access across Windows 11 (versions 22H3 through 26H1) and Windows Server 2022/2025 environments. The CWE-415 double-free vulnerability requires high attack complexity but no user interaction, enabling complete system compromise once exploited. Vendor-released patches are available with specific build numbers identified for each affected version. No public exploit identified at time of analysis, though the CVSS 7.0 score reflects significant impact potential when successfully exploited.

Windows Shell use-after-free memory corruption enables local privilege escalation to SYSTEM on Windows 11 (all versions 22H3 through 26H1) and Windows Server 2022/2025. Authenticated low-privileged users can exploit freed memory references in Shell components despite high attack complexity requirements. Vendor-released patches address all affected versions. EPSS data not available; no public exploit identified at time of analysis, though the vulnerability class (CWE-416) is well-understood and commonly weaponized in Windows privilege escalation chains.

Type confusion in Windows OLE (Object Linking and Embedding) enables authenticated local attackers to escalate privileges across all supported Windows 10, 11, and Server versions (2012-2025). The memory corruption flaw allows low-privileged users to execute code with elevated permissions through incompatible type handling. Vendor-released patches are available for all affected versions. No public exploit identified at time of analysis, though the low attack complexity (AC:L) and lack of user interaction (UI:N) make this accessible to attackers with basic local access.

Local privilege escalation in Windows Sensor Data Service affects all supported Windows 10, Windows 11, and Windows Server versions through untrusted pointer dereference (CWE-822). Authenticated local attackers with low-privilege accounts can exploit this vulnerability with low complexity to gain SYSTEM-level privileges, achieving full compromise of confidentiality, integrity, and availability. Vendor-released patches are available across all affected product lines. No public exploit identified

Local privilege escalation in Windows Remote Desktop Licensing Service affects all supported Windows 10, Windows 11, and Windows Server versions (2012-2025) via missing authentication on a critical function. Authenticated local attackers with low privileges can exploit this CWE-306 authentication bypass to gain SYSTEM-level access with high impact to confidentiality, integrity, and availability (CVSS 7.8). Patch available per vendor; no public exploit identified at time of analysis. The wide foo

Microsoft Local Security Authority Subsystem Service (LSASS) information disclosure vulnerability allows authenticated network attackers to read sensitive memory contents via a bounds check bypass in the LSASS process. The vulnerability affects Windows 10 (versions 1607, 1809, 21H2, 22H2), Windows 11 (versions 22H3, 23H2, 24H2, 25H2, 26H1), Windows Server 2016, 2019, 2022, and 2025. No public exploit code or active exploitation has been reported; vendor-released patches are available across all affected versions.

Windows Remote Desktop spoofing vulnerability allows remote unauthenticated attackers to bypass security warnings and trick users into accepting malicious RDP connections, potentially exposing sensitive session data. Affects all supported Windows 10, 11, and Server versions from 2012 through 2025. Vendor-released patches are available. No public exploit identified at time of analysis, though the low attack complexity (AC:L) and network attack vector (AV:N) indicate exploitation would be straight

Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows authorized local attackers to bypass security features, affecting Windows 10 (versions 1607, 1809, 21H2, 22H2), Windows 11 (versions 22H3 through 26H1), and Windows Server 2016-2025. With a CVSS score of 5.7 and high privilege requirement (PR:H), the vulnerability requires administrative or high-privilege account access but presents significant confidentiality and integrity risk to isolated security domai

Race condition in Microsoft AppLocker Filter Driver (applockerfltr.sys) allows local authenticated users with low privileges to elevate to SYSTEM through improper synchronization of shared resources. Affects Windows 11 (22H2 through 26H1) and Windows Server 2022/2025 editions. Vendor-released patch available as of April 2025 security updates. CVSS 7.0 reflects high attack complexity but complete system compromise if successful. No public exploit identified at time of analysis, though the local privilege escalation vector makes this valuable for post-compromise lateral movement in enterprise environments.