Microsoft Windows 11 Version 26H1 vulnerabilities
2,567 known vulnerabilities affecting microsoft/windows_11_version_26h1.
Total CVEs
2,567
CISA KEV
10
actively exploited
Public exploits
6
Exploited in wild
13
Severity breakdown
CRITICAL96HIGH1900MEDIUM566LOW5
Vulnerabilities
Page 69 of 129
CVE-2026-34338P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.21132026-05-12
CVE-2026-34338 [HIGH] CWE-416 CVE-2026-34338: Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges loca
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-40382P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.21132026-05-12
CVE-2026-40382 [HIGH] CWE-416 CVE-2026-40382: Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges loca
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-85933P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.32312026-10-13
CVE-2026-85933 [HIGH] CWE-416 CVE-2026-85933: Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileg
Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-27920P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-27920 [HIGH] CWE-822 CVE-2026-27920: Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an author
Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-72929P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.29542026-09-08
CVE-2026-72929 [HIGH] CWE-354 CVE-2026-72929: Improper validation of integrity check value in Windows Installer allows an authorized attacker to e
Improper validation of integrity check value in Windows Installer allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-26170P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-26170 [HIGH] CWE-20 CVE-2026-26170: Improper input validation in Microsoft PowerShell allows an authorized attacker to elevate privilege
Improper input validation in Microsoft PowerShell allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-33101P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-33101 [HIGH] CWE-416 CVE-2026-33101: Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileg
Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-27910P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-27910 [HIGH] CWE-280 CVE-2026-27910: Improper handling of insufficient permissions or privileges in Windows Installer allows an authorize
Improper handling of insufficient permissions or privileges in Windows Installer allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-32165P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-32165 [HIGH] CWE-362 CVE-2026-32165: Use after free in Windows User Interface Core allows an authorized attacker to elevate privileges lo
Use after free in Windows User Interface Core allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-32164P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-32164 [HIGH] CWE-362 CVE-2026-32164: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows User Interface Core allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-32163P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-32163 [HIGH] CWE-362 CVE-2026-32163: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows User Interface Core allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-26172P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-26172 [HIGH] CWE-362 CVE-2026-26172: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-27911P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-27911 [HIGH] CWE-362 CVE-2026-27911: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows User Interface Core allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-73017P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.29542026-09-08
CVE-2026-73017 [HIGH] CWE-122 CVE-2026-73017: Heap-based buffer overflow in Windows Graphics Kernel allows an authorized attacker to execute code
Heap-based buffer overflow in Windows Graphics Kernel allows an authorized attacker to execute code locally.
nvd
CVE-2026-97813P3MEDIUMCVSS 6.5≥ 10.0.28000.0, < 10.0.28000.32312026-10-13
CVE-2026-97813 [MEDIUM] CWE-122 CVE-2026-97813: Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to disclose information
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to disclose information over a network.
nvd
CVE-2026-50507P3MEDIUMCVSS 6.8≥ 10.0.28000.0, < 10.0.28000.22692026-06-09
CVE-2026-50507 [MEDIUM] CWE-306 CVE-2026-50507: Missing authentication for critical function in Windows BitLocker allows an unauthorized attacker to
Missing authentication for critical function in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.
nvd
CVE-2026-85921P3HIGHCVSS 8.2≥ 10.0.28000.0, < 10.0.28000.29562026-09-14
CVE-2026-85921 [HIGH] CWE-415 CVE-2026-85921: Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locall
Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-72958P3HIGHCVSS 8.2≥ 10.0.28000.0, < 10.0.28000.29542026-09-08
CVE-2026-72958 [HIGH] CWE-415 CVE-2026-72958: Double free in Windows Credential Guard allows an authorized attacker to elevate privileges locally.
Double free in Windows Credential Guard allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-69846P3HIGHCVSS 8.2≥ 10.0.28000.0, < 10.0.28000.29542026-09-08
CVE-2026-69846 [HIGH] CWE-190 CVE-2026-69846: Integer overflow or wraparound in Windows Secure Kernel Mode allows an authorized attacker to elevat
Integer overflow or wraparound in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-48573P3HIGHCVSS 7.9≥ 10.0.28000.0, < 10.0.28000.22692026-06-09
CVE-2026-48573 [HIGH] CWE-1329 CVE-2026-48573: No cwe for this issue in Windows Secure Boot allows an authorized attacker to bypass a security feat
No cwe for this issue in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
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