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-2026-70095High· 7.5Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to execute code over a network.
CVE-2026-70093High· 7.8Heap-based buffer overflow in Windows Rich Text Edit Control allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Rich Text Edit Control allows an authorized attacker to elevate privileges locally.
CVE-2026-70092High· 7.8Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to elevate privileges locally.
Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to elevate privileges locally.
CVE-2026-70090Medium· 5.5Use of uninitialized resource in Windows Netlogon allows an authorized attacker to disclose information locally.
Use of uninitialized resource in Windows Netlogon allows an authorized attacker to disclose information locally.
CVE-2026-70089High· 8.8Heap-based buffer overflow in Windows GDI allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows GDI allows an unauthorized attacker to execute code over a network.
CVE-2026-70087Medium· 5.5Incorrect authorization in DNS Server allows an authorized attacker to bypass a security feature locally.
Incorrect authorization in DNS Server allows an authorized attacker to bypass a security feature locally.
CVE-2026-70086High· 7.0Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
CVE-2026-70085Medium· 5.5Missing authorization in DNS Server allows an authorized attacker to perform tampering locally.
Missing authorization in DNS Server allows an authorized attacker to perform tampering locally.
CVE-2026-70084Medium· 5.5Improper access control in Windows Projected File System allows an authorized attacker to disclose information locally.
Improper access control in Windows Projected File System allows an authorized attacker to disclose information locally.
CVE-2026-70083Medium· 5.5Incorrect authorization in DNS Server allows an authorized attacker to perform tampering locally.
Incorrect authorization in DNS Server allows an authorized attacker to perform tampering locally.
CVE-2026-70082High· 7.5Uncaught exception in Windows DNS allows an unauthorized attacker to deny service over a network.
Uncaught exception in Windows DNS allows an unauthorized attacker to deny service over a network.
CVE-2026-70079High· 7.5Improper enforcement of behavioral workflow in Windows DNS allows an unauthorized attacker to deny service over a network.
Improper enforcement of behavioral workflow in Windows DNS allows an unauthorized attacker to deny service over a network.
CVE-2026-70077Medium· 4.7Use after free in Windows Kernel allows an authorized attacker to disclose information locally.
Use after free in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-70076High· 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-2026-70075Medium· 4.4Time-of-check time-of-use (toctou) race condition in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to bypass a security feature locally.
Time-of-check time-of-use (toctou) race condition in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to bypass a security feature locally.
CVE-2026-70074Medium· 5.5Out-of-bounds read in Windows DNS allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows DNS allows an authorized attacker to disclose information locally.
CVE-2026-70072Medium· 6.5Allocation of resources without limits or throttling in Windows Netlogon allows an authorized attacker to deny service over a network.
Allocation of resources without limits or throttling in Windows Netlogon allows an authorized attacker to deny service over a network.
CVE-2026-70071Medium· 5.5Improper verification of cryptographic signature in DNS Server allows an authorized attacker to perform tampering locally.
Improper verification of cryptographic signature in DNS Server allows an authorized attacker to perform tampering locally.
CVE-2026-70069High· 8.8Stack-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code over a network.
Stack-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code over a network.
CVE-2026-70068High· 8.8Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an unauthorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-70067High· 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-2026-70066High· 7.0Use after free in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
Use after free in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
CVE-2026-70064High· 7.8Integer underflow (wrap or wraparound) in Windows Kerberos allows an authorized attacker to elevate privileges locally.
Integer underflow (wrap or wraparound) in Windows Kerberos allows an authorized attacker to elevate privileges locally.
CVE-2026-70063Medium· 4.7Out-of-bounds read in Windows Kernel allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-70062High· 8.1Double free in Windows Libarchive allows an unauthorized attacker to execute code over a network.
Double free in Windows Libarchive allows an unauthorized attacker to execute code over a network.
CVE-2026-70060High· 7.8Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
CVE-2026-70059High· 7.8Heap-based buffer overflow in Windows OLE allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows OLE allows an authorized attacker to elevate privileges locally.
CVE-2026-70058High· 7.5Out-of-bounds write in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
Out-of-bounds write in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
CVE-2026-70057Medium· 5.5Incorrect authorization in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to bypass a security feature locally.
Incorrect authorization in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to bypass a security feature locally.
CVE-2026-70056High· 7.0Use after free in Windows Update Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Update Service allows an authorized attacker to elevate privileges locally.