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-2026-70136High· 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-2026-70135Medium· 5.5Out-of-bounds read in Windows Remote POS Driver allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Remote POS Driver allows an authorized attacker to disclose information locally.
CVE-2026-70134High· 7.0Use after free in Windows Event Tracing allows an authorized attacker to elevate privileges locally.
Use after free in Windows Event Tracing allows an authorized attacker to elevate privileges locally.
CVE-2026-70133High· 7.5Allocation of resources without limits or throttling in Windows SMB Server allows an unauthorized attacker to deny service over a network.
Allocation of resources without limits or throttling in Windows SMB Server allows an unauthorized attacker to deny service over a network.
CVE-2026-70132High· 7.8Heap-based buffer overflow in Windows Portable Device File System Driver allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Portable Device File System Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-70131High· 7.8Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to elevate privileges locally.
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to elevate privileges locally.
CVE-2026-70128Medium· 5.5Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.
Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.
CVE-2026-70127High· 8.1Use after free in DNS Server allows an unauthorized attacker to execute code over a network.
Use after free in DNS Server allows an unauthorized attacker to execute code over a network.
CVE-2026-70126High· 7.1Out-of-bounds read in Windows Bluetooth Port Driver allows an unauthorized attacker to execute code over an adjacent network.
Out-of-bounds read in Windows Bluetooth Port Driver allows an unauthorized attacker to execute code over an adjacent network.
CVE-2026-70123High· 7.8Numeric truncation error in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
Numeric truncation error in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
CVE-2026-70122Medium· 6.5Time-of-check time-of-use (toctou) race condition in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
Time-of-check time-of-use (toctou) race condition in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
CVE-2026-70121High· 7.8Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-70119Medium· 6.5Out-of-bounds read in Windows DNS allows an authorized attacker to execute code over a network.
Out-of-bounds read in Windows DNS allows an authorized attacker to execute code over a network.
CVE-2026-70118High· 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-2026-70117High· 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-2026-70116Medium· 4.2Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.
Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.
CVE-2026-70115High· 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-2026-70114High· 7.8Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-70113High· 7.8Integer overflow or wraparound in Windows Client for NFS allows an authorized attacker to elevate privileges locally.
Integer overflow or wraparound in Windows Client for NFS allows an authorized attacker to elevate privileges locally.
CVE-2026-70112High· 7.8Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to execute code locally.
Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to execute code locally.
CVE-2026-70111High· 8.1Untrusted pointer dereference in Windows Kernel allows an unauthorized attacker to elevate privileges over a network.
Untrusted pointer dereference in Windows Kernel allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-70110High· 7.8Stack-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to elevate privileges locally.
Stack-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to elevate privileges locally.
CVE-2026-70109High· 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-2026-70108High· 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-2026-70106High· 7.8Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-70104High· 7.8Untrusted pointer dereference in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Untrusted pointer dereference in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
CVE-2026-70103High· 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-2026-70102High· 7.8Use after free in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.
Use after free in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-70097Medium· 5.6Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to perform spoofing locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to perform spoofing locally.
CVE-2026-70096Critical· 9.8Heap-based buffer overflow in Windows Rich Text Edit Control allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Rich Text Edit Control allows an unauthorized attacker to execute code over a network.