Microsoft Windows 11 Version 26H1 vulnerabilities

CVE-2026-83991 [MEDIUM] CWE-306 CVE-2026-83991: Missing authentication for critical function in Windows Cloud Files Mini Filter Driver allows an aut Missing authentication for critical function in Windows Cloud Files Mini Filter Driver allows an authorized attacker to perform tampering locally.

CVE-2026-78451 [MEDIUM] CWE-822 CVE-2026-78451: Untrusted pointer dereference in Microsoft Windows SCSI Class System File allows an unauthorized att Untrusted pointer dereference in Microsoft Windows SCSI Class System File allows an unauthorized attacker to elevate privileges with a physical attack.

CVE-2026-69490 [MEDIUM] CWE-125 CVE-2026-69490: Out-of-bounds read in Windows USB Mass Storage Class Driver allows an unauthorized attacker to eleva Out-of-bounds read in Windows USB Mass Storage Class Driver allows an unauthorized attacker to elevate privileges with a physical attack.

CVE-2026-62699 [MEDIUM] CWE-122 CVE-2026-62699: Null pointer dereference in Windows Universal Disk Format File System Driver (UDFS) allows an author Null pointer dereference in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to execute code locally.

CVE-2026-69469 [MEDIUM] CWE-122 CVE-2026-69469: Integer overflow or wraparound in Windows USB Audio Class driver (usbaudio.sys) allows an unauthoriz Integer overflow or wraparound in Windows USB Audio Class driver (usbaudio.sys) allows an unauthorized attacker to elevate privileges with a physical attack.

CVE-2026-83671 [MEDIUM] CWE-125 CVE-2026-83671: Out-of-bounds read in Windows Hyper-V allows an authorized attacker to disclose information locally. Out-of-bounds read in Windows Hyper-V allows an authorized attacker to disclose information locally.

CVE-2026-55000 [MEDIUM] CWE-416 CVE-2026-55000: Use after free in Windows USB Print Driver allows an unauthorized attacker to elevate privileges wit Use after free in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack.

CVE-2026-58543 [MEDIUM] CWE-362 CVE-2026-58543: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorized attacker to elevate privileges with a physical attack.

CVE-2026-83500 [MEDIUM] CWE-601 CVE-2026-83500: Url redirection to untrusted site ('open redirect') in Windows BitLocker allows an unauthorized atta Url redirection to untrusted site ('open redirect') in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.

CVE-2026-69569 [MEDIUM] CWE-822 CVE-2026-69569: Untrusted pointer dereference in Windows Print Spooler Components allows an authorized attacker to d Untrusted pointer dereference in Windows Print Spooler Components allows an authorized attacker to deny service over a network.

CVE-2026-85816 [MEDIUM] CWE-125 CVE-2026-85816: Out-of-bounds read in Windows Wi-Fi Driver allows an authorized attacker to disclose information ove Out-of-bounds read in Windows Wi-Fi Driver allows an authorized attacker to disclose information over an adjacent network.

CVE-2026-70055 [MEDIUM] CWE-497 CVE-2026-70055: Exposure of sensitive system information to an unauthorized control sphere in Windows Cryptographic Exposure of sensitive system information to an unauthorized control sphere in Windows Cryptographic Services allows an authorized attacker to disclose information locally.

CVE-2026-70260 [MEDIUM] CWE-497 CVE-2026-70260: Exposure of sensitive system information to an unauthorized control sphere in Microsoft Trace Data H Exposure of sensitive system information to an unauthorized control sphere in Microsoft Trace Data Helper allows an authorized attacker to disclose information locally.

CVE-2026-70261 [MEDIUM] CWE-497 CVE-2026-70261: Exposure of sensitive system information to an unauthorized control sphere in Microsoft Trace Data H Exposure of sensitive system information to an unauthorized control sphere in Microsoft Trace Data Helper allows an authorized attacker to disclose information locally.

CVE-2026-83705 [MEDIUM] CWE-497 CVE-2026-83705: Exposure of sensitive system information to an unauthorized control sphere in Windows HTTP.sys allow Exposure of sensitive system information to an unauthorized control sphere in Windows HTTP.sys allows an authorized attacker to disclose information locally.

CVE-2026-83835 [MEDIUM] CWE-126 CVE-2026-83835: Buffer over-read in Windows Common Log File System Driver allows an authorized attacker to disclose Buffer over-read in Windows Common Log File System Driver allows an authorized attacker to disclose information locally.

CVE-2026-23670 [MEDIUM] CWE-822 CVE-2026-23670: Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an autho Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to bypass a security feature locally.

CVE-2026-35423 [MEDIUM] CWE-125 CVE-2026-35423: Out-of-bounds read in Telnet Client allows an unauthorized attacker to disclose information over a n Out-of-bounds read in Telnet Client allows an unauthorized attacker to disclose information over a network.

CVE-2026-70084 [MEDIUM] CWE-22 CVE-2026-70084: Improper access control in Windows Projected File System allows an authorized attacker to disclose i Improper access control in Windows Projected File System allows an authorized attacker to disclose information locally.

CVE-2026-85812 [MEDIUM] CWE-552 CVE-2026-85812: Files or directories accessible to external parties in Windows Bind Filter Driver allows an authoriz Files or directories accessible to external parties in Windows Bind Filter Driver allows an authorized attacker to disclose information locally.