Microsoft Windows 11 Version 26H2 vulnerabilities
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Published CVEs affecting Microsoft Windows 11 Version 26H2: 1007 record(s), with affected versions and fixes.
CVE-2026-83517
Critical · 9.8
CWE-122 Oct 13, 2026
Microsoft Windows Media Foundation Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
CVE-2026-83516
High · 7.5
CWE-125 Oct 13, 2026
Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability
Out-of-bounds read in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.
CVE-2026-83515
Medium · 6.5
CWE-908 Oct 13, 2026
RPC Runtime Information Disclosure Vulnerability
Use of uninitialized resource in RPC Runtime allows an unauthorized attacker to disclose information over a network.
CVE-2026-83514
High · 7.8
CWE-122 Oct 13, 2026
Windows Partition Management Driver Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Partition Management Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-83513
High · 7.8
CWE-122 Oct 13, 2026
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-83510
High · 7.0
CWE-367 Oct 13, 2026
Windows Setup Files Cleanup Elevation of Privilege Vulnerability
Time-of-check time-of-use (toctou) race condition in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.
CVE-2026-83509
High · 7.0
CWE-426 Oct 13, 2026
Windows Setup Files Cleanup Elevation of Privilege Vulnerability
Untrusted search path in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.
CVE-2026-83508
High · 7.8
CWE-125 Oct 13, 2026
Windows NTFS Elevation of Privilege Vulnerability
Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-83507
Medium · 5.5
CWE-59 Oct 13, 2026
Windows Update Orchestrator Service Information Disclosure Vulnerability
Improper link resolution before file access ('link following') in Windows Update Orchestrator Service allows an authorized attacker to disclose information locally.
CVE-2026-83506
High · 7.8
CWE-426 Oct 13, 2026
Servicing Stack Updates Elevation of Privilege Vulnerability
Untrusted search path in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.
CVE-2026-83505
High · 7.0
CWE-367 Oct 13, 2026
Windows Setup Files Cleanup Elevation of Privilege Vulnerability
Time-of-check time-of-use (toctou) race condition in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.
CVE-2026-83500
Medium · 6.1
CWE-601 Oct 13, 2026
Windows BitLocker Security Feature Bypass Vulnerability
Url redirection to untrusted site ('open redirect') in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.
CVE-2026-81971
High · 7.0
CWE-362 Oct 13, 2026
Windows NTFS Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-81964
Medium · 5.5
CWE-798 Oct 13, 2026
Windows Update Orchestrator Service Security Feature Bypass Vulnerability
Use of hard-coded credentials in Windows Update Orchestrator Service allows an authorized attacker to bypass a security feature locally.
CVE-2026-78459
High · 7.8
CWE-122 Oct 13, 2026
Microsoft Internet Information Services Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Internet Information Services allows an authorized attacker to elevate privileges locally.
CVE-2026-77496
High · 8.8
CWE-122 Oct 13, 2026
Windows Imaging Component Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
CVE-2026-73027
High · 7.8
CWE-15 Oct 13, 2026
Windows Setup Files Cleanup Elevation of Privilege Vulnerability
External control of system or configuration setting in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.
CVE-2026-72969
High · 7.0
CWE-416 Oct 13, 2026
Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
CVE-2026-72968
High · 7.0
CWE-416 Oct 13, 2026
Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
CVE-2026-72955
High · 7.0
CWE-416 Oct 13, 2026
Windows Application Compatibility Cache Elevation of Privilege Vulnerability
Use after free in Windows Application Compatibility Cache allows an authorized attacker to elevate privileges locally.
CVE-2026-72934
High · 7.0
CWE-416 Oct 13, 2026
Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
CVE-2026-71347
Medium · 6.4
CWE-362 Oct 13, 2026
Windows Security Center Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Security Center allows an authorized attacker to elevate privileges locally.
CVE-2026-70580
High · 8.8
CWE-306 Oct 13, 2026
Windows Credential Guard Spoofing Vulnerability
Missing authentication for critical function in Windows Credential Guard allows an authorized attacker to perform spoofing locally.
CVE-2026-70566
High · 7.8
CWE-476 Oct 13, 2026
Windows Schannel Elevation of Privilege Vulnerability
Null pointer dereference in Windows Schannel allows an authorized attacker to elevate privileges locally.
CVE-2026-70303
High · 7.8
CWE-787 Oct 13, 2026
Windows Kernel Elevation of Privilege Vulnerability
Out-of-bounds write in Windows Kernel allows an authorized attacker to elevate privileges locally.