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Known vulnerabilities in Microsoft Windows 11 version 26H1

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CVE Summary Score Published
CVE-2026-83973 Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally 7.8 High Sep 8, 2026
CVE-2026-70145 Out-of-bounds read in Microsoft Windows Search Component allows an authorized attacker to disclose information locally 5.5 Medium Sep 8, 2026
CVE-2026-83968 Use after free in Windows Biometric Service allows an authorized attacker to elevate privileges locally 7.8 High Sep 8, 2026
CVE-2026-83970 Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally 7.8 High Sep 8, 2026
CVE-2026-83972 Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally 7.8 High Sep 8, 2026
CVE-2026-83967 Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally 7.8 High Sep 8, 2026
CVE-2026-83971 Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally 7.8 High Sep 8, 2026
CVE-2026-83954 Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally 7.8 High Sep 8, 2026
CVE-2026-69598 Incorrect calculation of buffer size in Windows iSCSI allows an unauthorized attacker to execute code over a network 8.8 High Sep 8, 2026
CVE-2026-72965 Use after free in Windows WebClient Service allows an authorized attacker to elevate privileges locally 7.8 High Sep 8, 2026
CVE-2026-69381 Out-of-bounds read in Windows Storage Port Driver allows an unauthorized attacker to disclose information with a… 4.6 Medium Sep 8, 2026
CVE-2026-81963 Exploited Microsoft Windows Link Following Vulnerability 7.8 High Sep 8, 2026
CVE-2026-83940 Use after free in Windows Device Association Service allows an authorized attacker to elevate privileges locally 7.0 High Sep 8, 2026
CVE-2026-83939 Untrusted pointer dereference in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally 8.2 High Sep 8, 2026
CVE-2026-81955 Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a… 8.8 High Sep 8, 2026
CVE-2026-81354 Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally 8.2 High Sep 8, 2026
CVE-2026-80096 Out-of-bounds read in Windows Remote Desktop Services allows an authorized attacker to elevate privileges over a network 8.8 High Sep 8, 2026
CVE-2026-78516 Insertion of sensitive information into externally-accessible file or directory in Windows Storage allows an… 4.3 Medium Sep 8, 2026
CVE-2026-78464 Time-of-check time-of-use (toctou) race condition in Windows MIDI Service Module allows an authorized attacker to… 7.0 High Sep 8, 2026
CVE-2026-78457 Use after free in Windows Security App allows an authorized attacker to elevate privileges locally 7.0 High Sep 8, 2026
CVE-2026-78452 Out-of-bounds read in Microsoft Windows SCSI Class System File allows an unauthorized attacker to disclose information… 4.6 Medium Sep 8, 2026
CVE-2026-78454 Out-of-bounds read in Windows CD-ROM Driver allows an authorized attacker to disclose information locally 5.5 Medium Sep 8, 2026
CVE-2026-78453 Integer underflow (wrap or wraparound) in Microsoft Windows SCSI Class System File allows an unauthorized attacker to… 6.5 Medium Sep 8, 2026
CVE-2026-78455 Out-of-bounds read in Xbox allows an unauthorized attacker to disclose information with a physical attack 4.3 Medium Sep 8, 2026
CVE-2026-78451 Untrusted pointer dereference in Microsoft Windows SCSI Class System File allows an unauthorized attacker to elevate… 6.8 Medium Sep 8, 2026

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