CVE-2026-119921 Windows Microsoft Account Sign-in Assistant Elevation of Privilege Vulnerability
PublishedHeap-based buffer overflow in Windows Microsoft Account Sign-in Assistant allows an authorized attacker to elevate privileges locally.
Technology
Microsoft Windows client and server operating systems. 11,371 published CVES affecting Windows, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
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Heap-based buffer overflow in Windows Microsoft Account Sign-in Assistant allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Distributed Transaction Coordinator allows an authorized attacker to elevate privileges locally.
Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges with a physical attack.
Heap-based buffer overflow in Windows Distributed Transaction Coordinator allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Input System allows an authorized attacker to elevate privileges locally.
Improper restriction of communication channel to intended endpoints in Windows Setup and Deployment allows an authorized attacker to elevate privileges locally.
Improper link resolution before file access ('link following') in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
Double free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Time-of-check time-of-use (toctou) race condition in Windows Win32K allows an authorized attacker to disclose information locally.
Uncontrolled resource consumption in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.
Integer underflow (wrap or wraparound) in Windows Storage Spaces Controller allows an unauthorized attacker to execute code over a network.
Improper neutralization of special elements used in an os command ('os command injection') in Windows Sandbox allows an authorized attacker to elevate privileges locally.
Untrusted pointer dereference in Windows Function Discovery Resource Publication allows an authorized attacker to elevate privileges locally.
Improper control of generation of code ('code injection') in Microsoft Windows Speech allows an authorized attacker to elevate privileges locally.
Null pointer dereference in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally.
Null pointer dereference in Windows PrintWorkflowUserSvc allows an authorized attacker to elevate privileges locally.
Improper input validation in Windows DNS allows an authorized attacker to perform spoofing over a network.
Improper access control in Windows Installer allows an authorized attacker to elevate privileges locally.
Use after free in Windows Audio Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Audio Service allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Audio Service allows an authorized attacker to elevate privileges locally.
Incorrect authorization in Windows Installer allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows DHCP Server allows an authorized attacker to deny service over a network.
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.