microsoft has 4,538 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2914 in the last 90 days against 931 in the 90 before. The busiest recent month was October 2026 with 1465. The median CVSS is 7.8 (high), with 269 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 (924) and CWE-416 (846). Most affected products: windows_10_1607 (984), Windows 10 Version 1607 (880), 365_apps (265).
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
- 2914 prev 931
Weakness classes
Products
- windows_10_1607 984
- Windows 10 Version 1607 880
- 365_apps 265
- Microsoft 365 Apps for Enterprise 233
- Windows 10 Version 1809 198
- windows_10_1809 172
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.
4538 CVEsRSS
CVE-2026-97004High· 8.8Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
CVE-2026-97003High· 8.8Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
CVE-2026-97001High· 7.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-96997High· 7.8Use after free in Microsoft Office OneNote allows an authorized attacker to elevate privileges locally.
Use after free in Microsoft Office OneNote allows an authorized attacker to elevate privileges locally.
CVE-2026-96996High· 7.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-96995High· 7.8Stack-based buffer overflow in Microsoft Office Word allows an authorized attacker to elevate privileges locally.
Stack-based buffer overflow in Microsoft Office Word allows an authorized attacker to elevate privileges locally.
CVE-2026-96957High· 8.8Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-96953High· 7.8Null pointer dereference in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to execute code locally.
Null pointer dereference in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to execute code locally.
CVE-2026-96952High· 8.8Heap-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-2026-96951High· 8.8CISA KEV0dayPoCImproper neutralization of special elements used in a command ('command injection') in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
Improper neutralization of special elements used in a command ('command injection') in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-96950High· 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-2026-96949High· 7.0Use 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-2026-96948Medium· 5.5Exposure of sensitive information to an unauthorized actor in Windows Client Side Caching driver (csc.sys) allows an authorized attacker to disclose information locally.
Exposure of sensitive information to an unauthorized actor in Windows Client Side Caching driver (csc.sys) allows an authorized attacker to disclose information locally.
CVE-2026-96947High· 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-2026-96946High· 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-2026-96945High· 7.5Uncaught exception in Windows Failover Cluster allows an unauthorized attacker to deny service over a network.
Uncaught exception in Windows Failover Cluster allows an unauthorized attacker to deny service over a network.
CVE-2026-96944Medium· 5.5Insertion of sensitive information into externally-accessible file or directory in Windows Storage allows an authorized attacker to disclose information locally.
Insertion of sensitive information into externally-accessible file or directory in Windows Storage allows an authorized attacker to disclose information locally.
CVE-2026-96943High· 8.8Integer overflow or wraparound in Windows Raw Image Extension allows an unauthorized attacker to execute code over a network.
Integer overflow or wraparound in Windows Raw Image Extension allows an unauthorized attacker to execute code over a network.
CVE-2026-96939High· 7.0Time-of-check time-of-use (toctou) race condition in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.
Time-of-check time-of-use (toctou) race condition in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.
CVE-2026-96938Medium· 6.7Heap-based buffer overflow in Windows Distributed File System (DFS) allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Distributed File System (DFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-96937High· 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-2026-96935Medium· 5.5Exposure of sensitive system information to an unauthorized control sphere in Windows NTFS allows an authorized attacker to disclose information locally.
Exposure of sensitive system information to an unauthorized control sphere in Windows NTFS allows an authorized attacker to disclose information locally.
CVE-2026-96934Critical· 9.8Use after free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
Use after free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
CVE-2026-96933High· 7.8Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.
Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.
CVE-2026-96932High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Embedded Mode Service allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Embedded Mode Service allows an authorized attacker to elevate privileges locally.
CVE-2026-96931High· 7.8Untrusted pointer dereference in Windows NTFS allows an authorized attacker to elevate privileges locally.
Untrusted pointer dereference in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-96930Medium· 5.5Out-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-2026-96929High· 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-2026-96928High· 7.8Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-96927Medium· 5.5Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.