Microsoft Windows 11 23h2
Don't miss out!
Thousands of developers use stack.watch to stay informed.Get an email whenever new security vulnerabilities are reported in Microsoft Windows 11 23h2.
By the Year
In 2026 there have been 597 vulnerabilities in Microsoft Windows 11 23h2 with an average score of 7.2 out of ten. Last year, in 2025 Windows 11 23h2 had 663 security vulnerabilities published. If vulnerabilities keep coming in at the current rate, it appears that number of security vulnerabilities in Windows 11 23h2 in 2026 could surpass last years number. However, the average CVE base score of the vulnerabilities in 2026 is greater by 0.03.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 597 | 7.23 |
| 2025 | 663 | 7.21 |
| 2024 | 541 | 7.34 |
| 2023 | 49 | 7.70 |
| 2022 | 0 | 0.00 |
| 2021 | 0 | 0.00 |
| 2020 | 1 | 7.00 |
It may take a day or so for new Windows 11 23h2 vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Microsoft Windows 11 23h2 Security Vulnerabilities
Aug 2026: Windows Telephony Service Elevation of Privilege Vulnerability
CVE-2026-62727
7 - High
- August 19, 2026
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
Race Condition
Aug 2026: Windows Management Instrumentation Information Disclosure Vulnerability
CVE-2026-62738
5.5 - Medium
- August 11, 2026
Out-of-bounds read in Windows Management Instrumentation allows an authorized attacker to disclose information locally.
Out-of-bounds Read
Aug 2026: Windows DNS Elevation of Privilege Vulnerability
CVE-2026-65799
6.7 - Medium
- August 11, 2026
Integer overflow or wraparound in Windows DNS allows an authorized attacker to elevate privileges locally.
Integer Overflow or Wraparound
Aug 2026: Windows DNS Elevation of Privilege Vulnerability
CVE-2026-65798
6.7 - Medium
- August 11, 2026
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
Numeric Truncation Error
Aug 2026: Windows DNS Elevation of Privilege Vulnerability
CVE-2026-65797
6.7 - Medium
- August 11, 2026
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
Numeric Truncation Error
Aug 2026: Windows SMB Client Information Disclosure Vulnerability
CVE-2026-65794
6.5 - Medium
- August 11, 2026
Buffer over-read in Windows SMB Client allows an unauthorized attacker to disclose information over a network.
Buffer Over-read
Aug 2026: Windows DNS Elevation of Privilege Vulnerability
CVE-2026-65795
6.7 - Medium
- August 11, 2026
Relative path traversal in Windows DNS allows an authorized attacker to elevate privileges locally.
Numeric Truncation Error
Aug 2026: Windows Message Queuing Elevation of Privilege Vulnerability
CVE-2026-65790
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows Message Queuing allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Aug 2026: Active Directory Security Feature Bypass Vulnerability
CVE-2026-65777
5.3 - Medium
- August 11, 2026
Inadequate encryption strength in Windows Active Directory allows an authorized attacker to bypass a security feature over a network.
Inadequate Encryption Strength
Aug 2026: Windows Win32k Elevation of Privilege Vulnerability
CVE-2026-65775
7.8 - High
- August 11, 2026
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
Dangling pointer
Aug 2026: Windows Installer Elevation of Privilege Vulnerability
CVE-2026-65774
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Aug 2026: Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-65773
7.8 - High
- August 11, 2026
Improper access control in Windows Kernel allows an authorized attacker to elevate privileges locally.
Authorization
Aug 2026: Windows DWM Core Library Elevation of Privilege Vulnerability
CVE-2026-62888
7.8 - High
- August 11, 2026
Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Dangling pointer
Aug 2026: Windows NTFS Information Disclosure Vulnerability
CVE-2026-62887
5.5 - Medium
- August 11, 2026
Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.
Out-of-bounds Read
Aug 2026: Windows Win32k Elevation of Privilege Vulnerability
CVE-2026-62885
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Aug 2026: Windows DNS Elevation of Privilege Vulnerability
CVE-2026-62881
6.7 - Medium
- August 11, 2026
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
Numeric Truncation Error
Aug 2026: Windows DNS Elevation of Privilege Vulnerability
CVE-2026-62883
6.7 - Medium
- August 11, 2026
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
Numeric Truncation Error
Aug 2026: Windows NTFS Elevation of Privilege Vulnerability
CVE-2026-62880
7.8 - High
- August 11, 2026
Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally.
Out-of-bounds Read
Aug 2026: Windows User Profile Service Elevation of Privilege Vulnerability
CVE-2026-62832
7.8 - High
- August 11, 2026
Improper link resolution before file access ('link following') in Windows User Profile Service allows an authorized attacker to elevate privileges locally.
insecure temporary file
Aug 2026: Windows GDI+ Remote Code Execution Vulnerability
CVE-2026-62822
8.8 - High
- August 11, 2026
Integer overflow or wraparound in Windows GDI+ allows an unauthorized attacker to execute code over a network.
Integer Overflow or Wraparound
Aug 2026: Windows HTTP.sys Elevation of Privilege Vulnerability
CVE-2026-62811
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Aug 2026: Windows NTFS Information Disclosure Vulnerability
CVE-2026-62793
5.5 - Medium
- August 11, 2026
Buffer over-read in Windows NTFS allows an authorized attacker to disclose information locally.
Buffer Over-read
Aug 2026: Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-62788
7 - High
- August 11, 2026
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Dangling pointer
Aug 2026: Windows SMBv3 Server Remote Code Execution Vulnerability
CVE-2026-62790
8.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over a network.
Heap-based Buffer Overflow
Aug 2026: Win32k Information Disclosure Vulnerability
CVE-2026-62786
5.5 - Medium
- August 11, 2026
Out-of-bounds read in Windows Win32K allows an authorized attacker to disclose information locally.
Out-of-bounds Read
Aug 2026: Windows SMBv3 Server Remote Code Execution Vulnerability
CVE-2026-62800
8.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over a network.
Heap-based Buffer Overflow
Aug 2026: RPC Runtime Library Remote Code Execution Vulnerability
CVE-2026-62781
8.1 - High
- August 11, 2026
Heap-based buffer overflow in RPC Runtime allows an unauthorized attacker to execute code over a network.
Heap-based Buffer Overflow
Aug 2026: Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-62780
7 - High
- August 11, 2026
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Dangling pointer
Aug 2026: Windows SMB Client Information Disclosure Vulnerability
CVE-2026-62782
6.5 - Medium
- August 11, 2026
Out-of-bounds read in Windows SMB Client allows an unauthorized attacker to disclose information over a network.
Out-of-bounds Read
Aug 2026: Windows Shell Elevation of Privilege Vulnerability
CVE-2026-62770
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows Shell allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Aug 2026: Windows Installer Elevation of Privilege Vulnerability
CVE-2026-62768
7.8 - High
- August 11, 2026
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Stack Overflow
Aug 2026: Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
CVE-2026-62771
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Aug 2026: Windows DNS Elevation of Privilege Vulnerability
CVE-2026-62769
6.7 - Medium
- August 11, 2026
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
Numeric Truncation Error
Aug 2026: Windows Kerberos Elevation of Privilege Vulnerability
CVE-2026-62752
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows Kerberos allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Aug 2026: Windows Projected File System Elevation of Privilege Vulnerability
CVE-2026-62751
7.8 - High
- August 11, 2026
Integer overflow or wraparound in Windows Projected File System allows an authorized attacker to elevate privileges locally.
Integer Overflow or Wraparound
Aug 2026: Windows Schannel Security Feature Bypass Vulnerability
CVE-2026-62757
5.3 - Medium
- August 11, 2026
Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to bypass a security feature over a network.
Improper Verification of Cryptographic Signature
Aug 2026: Windows HTTP.sys Elevation of Privilege Vulnerability
CVE-2026-62741
7.8 - High
- August 11, 2026
Integer underflow (wrap or wraparound) in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
Integer underflow
Aug 2026: Windows DHCP Client Elevation of Privilege Vulnerability
CVE-2026-62736
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows DHCP Client allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Aug 2026: Windows Telephony Service Elevation of Privilege Vulnerability
CVE-2026-62734
7 - High
- August 11, 2026
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
Race Condition
Aug 2026: Windows Telephony Service Elevation of Privilege Vulnerability
CVE-2026-62732
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Aug 2026: Windows Wired AutoConfig Service Information Disclosure Vulnerability
CVE-2026-62730
5.5 - Medium
- August 11, 2026
Buffer over-read in Windows Wired AutoConfig Service allows an authorized attacker to disclose information locally.
Buffer Over-read
Aug 2026: Win32k Information Disclosure Vulnerability
CVE-2026-62743
5.5 - Medium
- August 11, 2026
Out-of-bounds read in Windows Win32K allows an authorized attacker to disclose information locally.
Out-of-bounds Read
Aug 2026: Windows Win32k Elevation of Privilege Vulnerability
CVE-2026-62733
7.8 - High
- August 11, 2026
Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.
Out-of-bounds Read
Aug 2026: Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVE-2026-62728
7 - High
- August 11, 2026
Time-of-check time-of-use (toctou) race condition in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
TOCTTOU
Aug 2026: Windows Telephony Service Elevation of Privilege Vulnerability
CVE-2026-62726
7 - High
- August 11, 2026
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
Dangling pointer
Aug 2026: Windows Telephony Service Elevation of Privilege Vulnerability
CVE-2026-62725
7 - High
- August 11, 2026
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
Dangling pointer
Aug 2026: Windows Message Queuing Elevation of Privilege Vulnerability
CVE-2026-62717
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows Message Queuing allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Aug 2026: Windows User-Mode Power Service (UMPS) Elevation of Privilege Vulnerability
CVE-2026-62721
7.8 - High
- August 11, 2026
Insufficient granularity of access control in User-Mode Power Service (UMPS) allows an authorized attacker to elevate privileges locally.
Insufficient Granularity of Access Control
Aug 2026: Windows Win32k Elevation of Privilege Vulnerability
CVE-2026-62711
7.8 - High
- August 11, 2026
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
Dangling pointer
Aug 2026: Windows Device Association Service Elevation of Privilege Vulnerability
CVE-2026-62710
7.8 - High
- August 11, 2026
Heap-based buffer overflow in Windows Device Association Service allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Stay on top of Security Vulnerabilities
Want an email whenever new vulnerabilities are published for Microsoft Windows 11 23h2 or by Microsoft? Click the Watch button to subscribe.
