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-2026-70574High· 7.8Out-of-bounds read in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-70573High· 7.0Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
CVE-2026-70572High· 7.8Integer overflow or wraparound in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
Integer overflow or wraparound in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
CVE-2026-70570High· 7.5Remote 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-2026-70569High· 7.8Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-70568High· 7.0Heap-based buffer overflow in Windows Defender Firewall Service allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Defender Firewall Service allows an authorized attacker to elevate privileges locally.
CVE-2026-70567High· 7.0Double free in Windows Display Enhancement Service allows an authorized attacker to elevate privileges locally.
Double free in Windows Display Enhancement Service allows an authorized attacker to elevate privileges locally.
CVE-2026-70565High· 7.0Use after free in Windows AF_UNIX Socket Provider allows an authorized attacker to elevate privileges locally.
Use after free in Windows AF_UNIX Socket Provider allows an authorized attacker to elevate privileges locally.
CVE-2026-70564High· 7.8Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
CVE-2026-70563High· 8.1Improper link resolution before file access ('link following') in Windows Shell allows an unauthorized attacker to perform spoofing over a network.
Improper link resolution before file access ('link following') in Windows Shell allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-70562High· 7.0Double free in Windows Audio Service allows an authorized attacker to elevate privileges locally.
Double free in Windows Audio Service allows an authorized attacker to elevate privileges locally.
CVE-2026-70351High· 8.8Integer overflow or wraparound in Microsoft WebP Image Extension allows an unauthorized attacker to execute code over a network.
Integer overflow or wraparound in Microsoft WebP Image Extension allows an unauthorized attacker to execute code over a network.
CVE-2026-70342High· 8.1Use after free in Windows Ancillary Function Driver for WinSock allows an unauthorized attacker to elevate privileges over a network.
Use after free in Windows Ancillary Function Driver for WinSock allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-70334High· 7.8Incomplete list of disallowed inputs in Visual Studio Code allows an unauthorized attacker to bypass a security feature locally.
Incomplete list of disallowed inputs in Visual Studio Code allows an unauthorized attacker to bypass a security feature locally.
CVE-2026-70296Critical· 9.8Out-of-bounds write in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
Out-of-bounds write in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
CVE-2026-70290Medium· 5.5Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
CVE-2026-70289High· 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-2026-70283High· 7.0Incorrect authorization in Windows Win32K allows an authorized attacker to elevate privileges locally.
Incorrect authorization in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-70203High· 8.8Heap-based buffer overflow in Windows Media Player allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Media Player allows an unauthorized attacker to execute code over a network.
CVE-2026-70145Medium· 5.5Out-of-bounds read in Microsoft Windows Search Component allows an authorized attacker to disclose information locally.
Out-of-bounds read in Microsoft Windows Search Component allows an authorized attacker to disclose information locally.
CVE-2026-70124Medium· 5.9Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to disclose information over a network.
CVE-2026-70091Medium· 5.9Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an unauthorized attacker to deny service over a network.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an unauthorized attacker to deny service over a network.
CVE-2026-70065High· 7.5Missing release of memory after effective lifetime in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Missing release of memory after effective lifetime in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
CVE-2026-70019Medium· 6.5Windows hard link in Windows Compressed Folder allows an unauthorized attacker to disclose information over a network.
Windows hard link in Windows Compressed Folder allows an unauthorized attacker to disclose information over a network.
CVE-2026-69989High· 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-2026-69930Medium· 5.9Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to disclose information over a network.
CVE-2026-69929Medium· 5.9Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to disclose information over a network.
CVE-2026-69921High· 7.8Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
CVE-2026-69911High· 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-2026-69910Critical· 9.8Stack-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code over a network.
Stack-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code over a network.