Microsoft has 4,599 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2930 in the last 90 days against 932 in the 90 before. The busiest recent month was October 2026 with 1482. The median CVSS is 7.8 (high), with 273 rated critical. 2% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 112 days (95 cases). The dominant weakness classes are CWE-122 (931) and CWE-416 (851). Most affected products: windows_10_1607 (988), Windows 10 Version 1607 (877), 365_apps (267).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 2% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- 112 d median(95)
- Last 90 days
- 2930 prev 932
Weakness classes
Products
- windows_10_1607 988
- Windows 10 Version 1607 877
- 365_apps 267
- Microsoft 365 Apps for Enterprise 232
- Windows 10 Version 1809 199
- windows_10_1809 174
Worst active — by depth score
CVE-2025-53770Critical· 9.8Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing…100CVE-2021-38647Critical· 9.8Open Management Infrastructure (OMI) Remote Code Execution Vulnerability100CVE-2021-34473Critical· 9.1Microsoft Exchange Server Remote Code Execution Vulnerability100CVE-2021-26855Critical· 9.1Microsoft Exchange Server Remote Code Execution Vulnerability100CVE-2020-0796Critical· 10.0A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Remote Code Execution Vulnerability'.100
Microsoft vulnerabilities
CVEs affecting Microsoft, newest first. Open any entry for full detail, references, and exploit status.
4599 CVEsRSS
CVE-2026-69453Medium· 5.5Missing authorization in Microsoft Windows Search Component allows an authorized attacker to perform tampering locally.
Missing authorization in Microsoft Windows Search Component allows an authorized attacker to perform tampering locally.
CVE-2026-69451High· 7.1PoCUse after free in Windows Management Instrumentation allows an authorized attacker to elevate privileges over a network.
Use after free in Windows Management Instrumentation allows an authorized attacker to elevate privileges over a network.
CVE-2026-69450High· 7.8Out-of-bounds read in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
CVE-2026-69449Medium· 6.7Heap-based buffer overflow in Windows BitLocker allows an authorized attacker to execute code locally.
Heap-based buffer overflow in Windows BitLocker allows an authorized attacker to execute code locally.
CVE-2026-69448High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69447High· 7.8Heap-based buffer overflow in Windows Audio Service allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Audio Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69445High· 7.8Improper limitation of a pathname to a restricted directory ('path traversal') in Windows Compressed Folder allows an authorized attacker to elevate privileges locally.
Improper limitation of a pathname to a restricted directory ('path traversal') in Windows Compressed Folder allows an authorized attacker to elevate privileges locally.
CVE-2026-69444High· 7.8Heap-based buffer overflow in Microsoft Windows Speech allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Microsoft Windows Speech allows an authorized attacker to elevate privileges locally.
CVE-2026-69443High· 7.5Out-of-bounds read in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to disclose information over a network.
CVE-2026-69442High· 8.8Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.
CVE-2026-69441High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Installer allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-69440High· 7.0Time-of-check time-of-use (toctou) race condition in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
Time-of-check time-of-use (toctou) race condition in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
CVE-2026-69439High· 8.8Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.
Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-69438High· 8.1Incorrect conversion between numeric types in Microsoft JScript allows an unauthorized attacker to execute code over a network.
Incorrect conversion between numeric types in Microsoft JScript allows an unauthorized attacker to execute code over a network.
CVE-2026-69436High· 7.8Heap-based buffer overflow in Windows State Repository Service allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows State Repository Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69434High· 8.8Heap-based buffer overflow in Windows URL Moniker allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows URL Moniker allows an unauthorized attacker to execute code over a network.
CVE-2026-69433High· 7.8Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
CVE-2026-69432High· 7.8Heap-based buffer overflow in Volume Manager Driver allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Volume Manager Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-69431Critical· 9.8Heap-based buffer overflow in Telnet Client allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Telnet Client allows an unauthorized attacker to execute code over a network.
CVE-2026-69430High· 7.0Use after free in Windows Embedded Mode Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Embedded Mode Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69429High· 7.5Heap-based buffer overflow in Windows IKE Extension allows an authorized attacker to execute code over a network.
Heap-based buffer overflow in Windows IKE Extension allows an authorized attacker to execute code over a network.
CVE-2026-69428High· 7.5Out-of-bounds read in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network.
Out-of-bounds read in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network.
CVE-2026-69427High· 8.0Out-of-bounds read in Windows VOLSNAP.SYS allows an authorized attacker to elevate privileges over a network.
Out-of-bounds read in Windows VOLSNAP.SYS allows an authorized attacker to elevate privileges over a network.
CVE-2026-69426High· 7.8Heap-based buffer overflow in Windows VOLSNAP.SYS allows an authorized attacker to execute code locally.
Heap-based buffer overflow in Windows VOLSNAP.SYS allows an authorized attacker to execute code locally.
CVE-2026-69425Medium· 4.7Improper link resolution before file access ('link following') in Windows NTFS allows an authorized attacker to perform tampering locally.
Improper link resolution before file access ('link following') in Windows NTFS allows an authorized attacker to perform tampering locally.
CVE-2026-69424High· 7.8Heap-based buffer overflow in Windows Distributed File System (DFS) allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Distributed File System (DFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-69423High· 8.0Heap-based buffer overflow in Windows USB Video Driver allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows USB Video Driver allows an authorized attacker to elevate privileges over a network.
CVE-2026-69422High· 7.0Use after free in Windows USB Video Driver allows an authorized attacker to elevate privileges locally.
Use after free in Windows USB Video Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-69421High· 7.8Integer underflow (wrap or wraparound) in Windows Kernel Mode Driver allows an authorized attacker to elevate privileges locally.
Integer underflow (wrap or wraparound) in Windows Kernel Mode Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-69420High· 7.8Heap-based buffer overflow in Windows VOLSNAP.SYS allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows VOLSNAP.SYS allows an authorized attacker to elevate privileges locally.