microsoft has 2,953 CVEs on record between 2013 and 2026. Disclosure cadence is accelerating: 2138 in the last 90 days against 418 in the 90 before. The busiest recent month was September 2026 with 1005. The median CVSS is 7.8 (high), with 178 rated critical. 3% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 113 days (91 cases). The dominant weakness classes are CWE-122 (585) and CWE-416 (512). Most affected products: windows_10_1607 (626), Windows 10 Version 1607 (499), Microsoft 365 Apps for Enterprise (209).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 3% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- 113 d median(91)
- Last 90 days
- 2138 prev 418
Weakness classes
Products
- windows_10_1607 626
- Windows 10 Version 1607 499
- Microsoft 365 Apps for Enterprise 209
- windows_10 122
- 365_apps 115
- windows_10_1809 103
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.
2953 CVEsRSS
CVE-2026-78504High· 8.8Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
CVE-2026-78503Medium· 6.5Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVE-2026-78502Medium· 6.5Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVE-2026-78464High· 7.0Time-of-check time-of-use (toctou) race condition in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
Time-of-check time-of-use (toctou) race condition in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
CVE-2026-78463High· 8.8Improper control of generation of code ('code injection') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
Improper control of generation of code ('code injection') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-78462High· 8.8Authorization bypass through user-controlled key in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.
Authorization bypass through user-controlled key in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-78461High· 7.4Improper limitation of a pathname to a restricted directory ('path traversal') in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.
Improper limitation of a pathname to a restricted directory ('path traversal') in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-78457High· 7.0Use after free in Windows Security Health Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Security Health Service allows an authorized attacker to elevate privileges locally.
CVE-2026-78456High· 8.8Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
CVE-2026-78455Medium· 4.3Out-of-bounds read in Xbox allows an unauthorized attacker to disclose information with a physical attack.
Out-of-bounds read in Xbox allows an unauthorized attacker to disclose information with a physical attack.
CVE-2026-78454Medium· 5.5Out-of-bounds read in Windows CD-ROM Driver allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows CD-ROM Driver allows an authorized attacker to disclose information locally.
CVE-2026-78453Medium· 6.5Integer underflow (wrap or wraparound) in Microsoft Windows SCSI Class System File allows an unauthorized attacker to disclose information over a network.
Integer underflow (wrap or wraparound) in Microsoft Windows SCSI Class System File allows an unauthorized attacker to disclose information over a network.
CVE-2026-78452Medium· 4.6Out-of-bounds read in Microsoft Windows SCSI Class System File allows an unauthorized attacker to disclose information with a physical attack.
Out-of-bounds read in Microsoft Windows SCSI Class System File allows an unauthorized attacker to disclose information with a physical attack.
CVE-2026-78451Medium· 6.8Untrusted pointer dereference in Microsoft Windows SCSI Class System File allows an unauthorized attacker to elevate privileges with a physical attack.
Untrusted pointer dereference in Microsoft Windows SCSI Class System File allows an unauthorized attacker to elevate privileges with a physical attack.
CVE-2026-78450High· 8.1Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.
Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.
CVE-2026-78449High· 8.1Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.
Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.
CVE-2026-78448High· 7.8Heap-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-2026-78447High· 7.8Heap-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-2026-78446Medium· 5.3Use after free in Windows Distributed File System (DFS) allows an authorized attacker to deny service over a network.
Use after free in Windows Distributed File System (DFS) allows an authorized attacker to deny service over a network.
CVE-2026-78445Critical· 9.8Use after free in Windows Services for NFS ONCRPC XDR Driver allows an unauthorized attacker to execute code over a network.
Use after free in Windows Services for NFS ONCRPC XDR Driver allows an unauthorized attacker to execute code over a network.
CVE-2026-78444High· 8.1Untrusted pointer dereference in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
Untrusted pointer dereference in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
CVE-2026-78442High· 8.8Heap-based buffer overflow in Windows OLE DB allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows OLE DB allows an unauthorized attacker to execute code over a network.
CVE-2026-78441Medium· 6.5Out-of-bounds read in Windows OLE DB allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Windows OLE DB allows an unauthorized attacker to disclose information over a network.
CVE-2026-78439High· 8.8Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
CVE-2026-77911Medium· 6.5Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVE-2026-77909High· 7.7Insufficiently protected credentials in Azure CycleCloud allows an authorized attacker to disclose information over a network.
Insufficiently protected credentials in Azure CycleCloud allows an authorized attacker to disclose information over a network.
CVE-2026-77908High· 8.8Improper control of generation of code ('code injection') in Microsoft Dynamics 365 allows an authorized attacker to execute code over a network.
Improper control of generation of code ('code injection') in Microsoft Dynamics 365 allows an authorized attacker to execute code over a network.
CVE-2026-77907High· 8.8Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
CVE-2026-77906High· 8.8Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
CVE-2026-77905High· 7.0Use after free in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.
Use after free in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.