Microsoft has 4,599 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2930 in the last 90 days against 934 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 934
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-2026-85821Medium· 6.5Out-of-bounds read in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to disclose information locally.
CVE-2026-85820High· 7.8Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.
Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-85818Critical· 9.0Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.
Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-85817High· 8.8Reliance on untrusted inputs in a security decision in Windows PowerShell allows an unauthorized attacker to execute code over a network.
Reliance on untrusted inputs in a security decision in Windows PowerShell allows an unauthorized attacker to execute code over a network.
CVE-2026-85816Medium· 5.7Out-of-bounds read in Windows Wi-Fi Driver allows an authorized attacker to disclose information over an adjacent network.
Out-of-bounds read in Windows Wi-Fi Driver allows an authorized attacker to disclose information over an adjacent network.
CVE-2026-85815Medium· 5.5Out-of-bounds read in Windows Device Association Service allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Device Association Service allows an authorized attacker to disclose information locally.
CVE-2026-85814Critical· 9.8Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
CVE-2026-85812Medium· 5.5Files or directories accessible to external parties in Windows Bind Filter Driver allows an authorized attacker to disclose information locally.
Files or directories accessible to external parties in Windows Bind Filter Driver allows an authorized attacker to disclose information locally.
CVE-2026-85811High· 7.5Use after free in Network Policy Server (NPS) allows an unauthorized attacker to execute code over an adjacent network.
Use after free in Network Policy Server (NPS) allows an unauthorized attacker to execute code over an adjacent network.
CVE-2026-85810High· 7.0Use after free in Windows Telephony Server allows an authorized attacker to elevate privileges locally.
Use after free in Windows Telephony Server allows an authorized attacker to elevate privileges locally.
CVE-2026-85809Critical· 9.8Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine
Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine
CVE-2026-85808High· 7.5Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.
Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.
CVE-2026-85807High· 7.8Integer overflow or wraparound in Windows USB Video Driver allows an authorized attacker to elevate privileges locally.
Integer overflow or wraparound in Windows USB Video Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-85806Critical· 9.8Integer underflow (wrap or wraparound) in Network Policy Server (NPS) allows an unauthorized attacker to execute code over a network.
Integer underflow (wrap or wraparound) in Network Policy Server (NPS) allows an unauthorized attacker to execute code over a network.
CVE-2026-85805Medium· 6.5Improperly implemented security check for standard in Windows PowerShell allows an unauthorized attacker to bypass a security feature over a network.
Improperly implemented security check for standard in Windows PowerShell allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-85804High· 7.8Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
CVE-2026-85803High· 7.0Use after free in Windows Camera Frame Server Monitor allows an authorized attacker to elevate privileges locally.
Use after free in Windows Camera Frame Server Monitor allows an authorized attacker to elevate privileges locally.
CVE-2026-85802High· 7.0Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
CVE-2026-85800High· 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-2026-85799High· 8.1Use after free in Network Policy Server (NPS) allows an unauthorized attacker to execute code over a network.
Use after free in Network Policy Server (NPS) allows an unauthorized attacker to execute code over a network.
CVE-2026-85798High· 7.2Heap-based buffer overflow in Windows Distributed File System (DFS) allows an authorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Distributed File System (DFS) allows an authorized attacker to execute code over a network.
CVE-2026-85797Medium· 6.5Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information over a network.
CVE-2026-85796High· 7.8Numeric truncation error in Windows Installer allows an authorized attacker to elevate privileges locally.
Numeric truncation error in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-85795High· 7.8Use after free in Windows Text Services Framework allows an authorized attacker to elevate privileges locally.
Use after free in Windows Text Services Framework allows an authorized attacker to elevate privileges locally.
CVE-2026-85794Medium· 5.5Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to disclose information locally.
CVE-2026-85793Medium· 5.5Exposure of sensitive system information to an unauthorized control sphere in Windows Sysmain Service allows an authorized attacker to disclose information locally.
Exposure of sensitive system information to an unauthorized control sphere in Windows Sysmain Service allows an authorized attacker to disclose information locally.
CVE-2026-85792Critical· 9.8Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine
Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine
CVE-2026-85791High· 7.0Heap-based buffer overflow in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-85790Medium· 5.9Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
CVE-2026-85377High· 7.8Access of resource using incompatible type ('type confusion') in Windows CD-ROM Driver allows an authorized attacker to elevate privileges locally.
Access of resource using incompatible type ('type confusion') in Windows CD-ROM Driver allows an authorized attacker to elevate privileges locally.