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-2026-69564High· 7.0Heap-based buffer overflow in Windows Online Certificate Status Protocol (OCSP) allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Online Certificate Status Protocol (OCSP) allows an authorized attacker to elevate privileges locally.
CVE-2026-69563High· 7.0Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69562Medium· 6.5Out-of-bounds read in SQL Server allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in SQL Server allows an unauthorized attacker to disclose information over a network.
CVE-2026-69561High· 7.8Out-of-bounds read in Windows CD-ROM Driver allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows CD-ROM Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-69560High· 7.0Use after free in Windows Work Folder Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Work Folder Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69559Medium· 5.8Origin validation error in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.
Origin validation error in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.
CVE-2026-69556High· 8.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
CVE-2026-69554Medium· 5.5Missing authentication for critical function in Microsoft Windows Search Component allows an authorized attacker to perform tampering locally.
Missing authentication for critical function in Microsoft Windows Search Component allows an authorized attacker to perform tampering locally.
CVE-2026-69553High· 7.1Missing authorization in Windows Hyper-V allows an authorized attacker to elevate privileges over a network.
Missing authorization in Windows Hyper-V allows an authorized attacker to elevate privileges over a network.
CVE-2026-69552Medium· 5.7Generation of error message containing sensitive information in Windows Print Spooler Components allows an authorized attacker to disclose information over a network.
Generation of error message containing sensitive information in Windows Print Spooler Components allows an authorized attacker to disclose information over a network.
CVE-2026-69551High· 8.8Use after free in Windows DNS allows an authorized attacker to execute code over a network.
Use after free in Windows DNS allows an authorized attacker to execute code over a network.
CVE-2026-69549High· 7.0Out-of-bounds read in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-69548Medium· 4.6Heap-based buffer overflow in Windows RNDIS allows an unauthorized attacker to disclose information with a physical attack.
Heap-based buffer overflow in Windows RNDIS allows an unauthorized attacker to disclose information with a physical attack.
CVE-2026-69547High· 8.8Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code over a network.
Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code over a network.
CVE-2026-69546High· 8.1Use after free in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.
Use after free in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.
CVE-2026-69544High· 7.8Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.
CVE-2026-69542High· 7.8Heap-based buffer overflow in Windows Camera Frame Server Monitor allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Camera Frame Server Monitor allows an authorized attacker to elevate privileges locally.
CVE-2026-69541High· 7.8Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-69540High· 7.0Use after free in Windows Audio Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Audio Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69539High· 7.5Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.
Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.
CVE-2026-69538High· 7.8Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to execute code locally.
Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to execute code locally.
CVE-2026-69536High· 7.1Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.
Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.
CVE-2026-69535High· 7.8Numeric truncation error in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.
Numeric truncation error in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-69534High· 7.8Improper neutralization of special elements used in a command ('command injection') in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
Improper neutralization of special elements used in a command ('command injection') in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69532High· 7.8Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-69531Medium· 5.5Unintended proxy or intermediary ('confused deputy') in Microsoft Windows Speech allows an authorized attacker to perform tampering locally.
Unintended proxy or intermediary ('confused deputy') in Microsoft Windows Speech allows an authorized attacker to perform tampering locally.
CVE-2026-69530High· 8.1Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.
Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.
CVE-2026-69529High· 8.8Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.
CVE-2026-69528High· 7.8Missing authentication for critical function in Windows Shell allows an authorized attacker to elevate privileges locally.
Missing authentication for critical function in Windows Shell allows an authorized attacker to elevate privileges locally.
CVE-2026-69527Medium· 5.5Out-of-bounds read in Windows USB Mass Storage Class Driver allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows USB Mass Storage Class Driver allows an authorized attacker to disclose information locally.