Microsoft has 2,953 CVEs on record between 2013 and 2026. Disclosure cadence is accelerating: 2137 in the last 90 days against 419 in the 90 before. The busiest recent month was September 2026 with 1005. The median CVSS is 7.8 (high), with 178 rated critical. 3% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 113 days (91 cases). The dominant weakness classes are CWE-122 (585) and CWE-416 (512). Most affected products: windows_10_1607 (635), Windows 10 Version 1607 (490), Microsoft 365 Apps for Enterprise (209).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 3% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- 113 d median(91)
- Last 90 days
- 2137 prev 419
Weakness classes
Products
- windows_10_1607 635
- Windows 10 Version 1607 490
- Microsoft 365 Apps for Enterprise 209
- windows_10 122
- 365_apps 115
- windows_10_1809 103
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.
2953 CVEsRSS
CVE-2026-69672Medium· 5.5Use of uninitialized resource in Windows DNS allows an authorized attacker to disclose information locally.
Use of uninitialized resource in Windows DNS allows an authorized attacker to disclose information locally.
CVE-2026-69671High· 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-2026-69669High· 8.8Heap-based buffer overflow in Windows Kernel allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Kernel allows an unauthorized attacker to execute code over a network.
CVE-2026-69654High· 7.0Use after free in Windows Accounts Control allows an authorized attacker to elevate privileges locally.
Use after free in Windows Accounts Control allows an authorized attacker to elevate privileges locally.
CVE-2026-69652High· 7.0Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-69649High· 8.8Heap-based buffer overflow in Windows Raw Image Extension allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Raw Image Extension allows an unauthorized attacker to execute code over a network.
CVE-2026-69648High· 7.0Use after free in Windows Notification allows an authorized attacker to elevate privileges locally.
Use after free in Windows Notification allows an authorized attacker to elevate privileges locally.
CVE-2026-69645High· 7.0Use after free in Windows Message Queuing allows an authorized attacker to elevate privileges locally.
Use after free in Windows Message Queuing allows an authorized attacker to elevate privileges locally.
CVE-2026-69643High· 8.0Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to elevate privileges over a network.
CVE-2026-69641Critical· 9.1Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-69638High· 8.4Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
CVE-2026-69637Medium· 5.7Out-of-bounds read in Windows DHCP Server allows an authorized attacker to deny service over an adjacent network.
Out-of-bounds read in Windows DHCP Server allows an authorized attacker to deny service over an adjacent network.
CVE-2026-69636Medium· 6.5Improper neutralization of special elements used in an sql command ('sql injection') in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
Improper neutralization of special elements used in an sql command ('sql injection') in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
CVE-2026-69632High· 8.8Use after free in Microsoft Office allows an unauthorized attacker to execute code over a network.
Use after free in Microsoft Office allows an unauthorized attacker to execute code over a network.
CVE-2026-69631High· 7.5Integer overflow or wraparound in Windows DNS allows an unauthorized attacker to deny service over a network.
Integer overflow or wraparound in Windows DNS allows an unauthorized attacker to deny service over a network.
CVE-2026-69630High· 7.0Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-69629High· 8.8Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
CVE-2026-69628High· 8.8Heap-based buffer overflow in Windows iSCSI allows an authorized attacker to execute code over a network.
Heap-based buffer overflow in Windows iSCSI allows an authorized attacker to execute code over a network.
CVE-2026-69627Medium· 5.5Out-of-bounds read in Windows Remote Desktop Licensing Service allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Remote Desktop Licensing Service allows an authorized attacker to disclose information locally.
CVE-2026-69626Medium· 6.5Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
CVE-2026-69625High· 8.0Heap-based buffer overflow in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges over a network.
CVE-2026-69624Medium· 6.5Incomplete list of disallowed inputs in Active Directory Certificate Services (AD CS) allows an authorized attacker to perform tampering over a network.
Incomplete list of disallowed inputs in Active Directory Certificate Services (AD CS) allows an authorized attacker to perform tampering over a network.
CVE-2026-69623High· 8.0Heap-based buffer overflow in Windows HTTP Print Provider allows an authorized attacker to execute code over a network.
Heap-based buffer overflow in Windows HTTP Print Provider allows an authorized attacker to execute code over a network.
CVE-2026-69621High· 7.0Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69620High· 8.1Stack-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
Stack-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
CVE-2026-69619High· 8.0Out-of-bounds read in Windows exFAT File System allows an authorized attacker to elevate privileges over a network.
Out-of-bounds read in Windows exFAT File System allows an authorized attacker to elevate privileges over a network.
CVE-2026-69618Medium· 5.5Out-of-bounds read in Windows SMB Client allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows SMB Client allows an authorized attacker to disclose information locally.
CVE-2026-69617High· 7.0Out-of-bounds read in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-69616Medium· 5.5Out-of-bounds read in Windows Remote Desktop Services allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Remote Desktop Services allows an authorized attacker to disclose information locally.
CVE-2026-69615Low· 3.5Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.