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-2026-69689High· 8.0Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges over a network.
Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges over a network.
CVE-2026-69688High· 7.1Heap-based buffer overflow in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges over a network.
CVE-2026-69687High· 7.8Integer underflow (wrap or wraparound) in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.
Integer underflow (wrap or wraparound) in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.
CVE-2026-69686High· 8.8Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
CVE-2026-69685High· 7.8Heap-based buffer overflow in Windows Kerberos allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Kerberos allows an authorized attacker to elevate privileges locally.
CVE-2026-69684Medium· 5.5Generation of error message containing sensitive information in Windows Error Reporting allows an authorized attacker to disclose information locally.
Generation of error message containing sensitive information in Windows Error Reporting allows an authorized attacker to disclose information locally.
CVE-2026-69683Medium· 6.5Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
CVE-2026-69682High· 7.0Use after free in Windows Host Guardian Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Host Guardian Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69681High· 8.0Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges over a network.
CVE-2026-69680High· 8.1Origin validation error in Windows DNS allows an unauthorized attacker to perform spoofing over a network.
Origin validation error in Windows DNS allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-69679Medium· 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-2026-69678High· 8.8Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
CVE-2026-69676High· 8.8Authentication bypass by capture-replay in Windows Kerberos allows an authorized attacker to execute code over a network.
Authentication bypass by capture-replay in Windows Kerberos allows an authorized attacker to execute code over a network.
CVE-2026-69674Medium· 5.5Missing authentication for critical function in Windows Modern Device Management (MDM) allows an authorized attacker to bypass a security feature locally.
Missing authentication for critical function in Windows Modern Device Management (MDM) allows an authorized attacker to bypass a security feature locally.
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.