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-2026-69884High· 7.8Buffer over-read in Windows GDI allows an authorized attacker to elevate privileges locally.
Buffer over-read in Windows GDI allows an authorized attacker to elevate privileges locally.
CVE-2026-69883Critical· 9.8Use after free in Windows iSCSI allows an unauthorized attacker to execute code over a network.
Use after free in Windows iSCSI allows an unauthorized attacker to execute code over a network.
CVE-2026-69882High· 7.8Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.
Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.
CVE-2026-69880High· 7.8Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-69877Medium· 6.5Origin validation error in Azure DevOps allows an unauthorized attacker to disclose information over a network.
Origin validation error in Azure DevOps allows an unauthorized attacker to disclose information over a network.
CVE-2026-69867High· 7.8Out-of-bounds read in SQLite allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in SQLite allows an authorized attacker to elevate privileges locally.
CVE-2026-69856High· 7.0Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.
Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.
CVE-2026-69850High· 7.8Untrusted pointer dereference in Windows Certificates allows an authorized attacker to elevate privileges locally.
Untrusted pointer dereference in Windows Certificates allows an authorized attacker to elevate privileges locally.
CVE-2026-69840High· 7.0Use after free in Windows Certificates allows an authorized attacker to elevate privileges locally.
Use after free in Windows Certificates allows an authorized attacker to elevate privileges locally.
CVE-2026-69830High· 8.1Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
CVE-2026-69802High· 8.1Weak authentication in Network Device Enrollment Service (NDES) allows an unauthorized attacker to execute code over a network.
Weak authentication in Network Device Enrollment Service (NDES) allows an unauthorized attacker to execute code over a network.
CVE-2026-69798High· 7.8Use after free in Windows Wired AutoConfig Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Wired AutoConfig Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69795High· 7.0Null pointer dereference in Windows Clipboard Server allows an authorized attacker to elevate privileges locally.
Null pointer dereference in Windows Clipboard Server allows an authorized attacker to elevate privileges locally.
CVE-2026-69789High· 7.5Heap-based buffer overflow in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.
Heap-based buffer overflow in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.
CVE-2026-69783High· 7.8External control of file name or path in Windows Update allows an authorized attacker to elevate privileges locally.
External control of file name or path in Windows Update allows an authorized attacker to elevate privileges locally.
CVE-2026-69766High· 7.0Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.
Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.
CVE-2026-69765High· 8.8Use after free in Windows Storport Miniport Driver allows an unauthorized attacker to execute code over a network.
Use after free in Windows Storport Miniport Driver allows an unauthorized attacker to execute code over a network.
CVE-2026-69763High· 7.0Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.
Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.
CVE-2026-69743High· 7.0Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69736High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Credential Manager allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Credential Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-69733High· 7.8Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.
Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.
CVE-2026-69721Medium· 5.5Out-of-bounds read in Windows iSCSI allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows iSCSI allows an authorized attacker to disclose information locally.
CVE-2026-69718High· 7.8Improper neutralization of special elements used in a command ('command injection') in Windows Update allows an authorized attacker to elevate privileges locally.
Improper neutralization of special elements used in a command ('command injection') in Windows Update allows an authorized attacker to elevate privileges locally.
CVE-2026-69705Critical· 9.8Out-of-bounds write in Windows iSCSI allows an unauthorized attacker to execute code over a network.
Out-of-bounds write in Windows iSCSI allows an unauthorized attacker to execute code over a network.
CVE-2026-69675Medium· 5.5Out-of-bounds read in Windows Network File System allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Network File System allows an authorized attacker to disclose information locally.
CVE-2026-69673High· 7.8Improper link resolution before file access ('link following') in Windows Update allows an authorized attacker to elevate privileges locally.
Improper link resolution before file access ('link following') in Windows Update allows an authorized attacker to elevate privileges locally.
CVE-2026-69651High· 7.5Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
CVE-2026-69650High· 7.8Improper verification of cryptographic signature in Windows Key Distribution Center allows an authorized attacker to elevate privileges locally.
Improper verification of cryptographic signature in Windows Key Distribution Center allows an authorized attacker to elevate privileges locally.
CVE-2026-69644Medium· 5.5Exposure of sensitive system information to an unauthorized control sphere in Windows iSCSI allows an authorized attacker to disclose information locally.
Exposure of sensitive system information to an unauthorized control sphere in Windows iSCSI allows an authorized attacker to disclose information locally.
CVE-2026-69640Medium· 5.3Incorrect authorization in Windows Key Distribution Center allows an authorized attacker to bypass a security feature over a network.
Incorrect authorization in Windows Key Distribution Center allows an authorized attacker to bypass a security feature over a network.