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-2026-77505High· 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-2026-77504High· 8.8Double free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Double free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
CVE-2026-77503High· 8.4Out-of-bounds read in Windows NTFS allows an unauthorized attacker to elevate privileges locally.
Out-of-bounds read in Windows NTFS allows an unauthorized attacker to elevate privileges locally.
CVE-2026-77502High· 7.5Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
CVE-2026-77501High· 7.5Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
CVE-2026-77500High· 7.8Release of invalid pointer or reference in Windows Device Association Service allows an authorized attacker to elevate privileges locally.
Release of invalid pointer or reference in Windows Device Association Service allows an authorized attacker to elevate privileges locally.
CVE-2026-77499High· 7.5Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
CVE-2026-77498High· 7.5Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
CVE-2026-77495High· 8.8Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
CVE-2026-77494High· 7.5Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
CVE-2026-77493Critical· 9.8Double free in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
Double free in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
CVE-2026-77492Medium· 5.5Out-of-bounds read in Storage Port Driver allows an authorized attacker to disclose information locally.
Out-of-bounds read in Storage Port Driver allows an authorized attacker to disclose information locally.
CVE-2026-77491Medium· 5.5Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information locally.
Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information locally.
CVE-2026-77489High· 7.8Null pointer dereference in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
Null pointer dereference in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
CVE-2026-77488Medium· 5.5Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.
Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.
CVE-2026-77487High· 8.8Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-77486High· 8.8Integer overflow or wraparound in SQL Server allows an unauthorized attacker to execute code over a network.
Integer overflow or wraparound in SQL Server allows an unauthorized attacker to execute code over a network.
CVE-2026-77485High· 7.0Use after free in SQL Server allows an authorized attacker to elevate privileges locally.
Use after free in SQL Server allows an authorized attacker to elevate privileges locally.
CVE-2026-77484High· 8.8Deserialization of untrusted data in SQL Server allows an authorized attacker to execute code over a network.
Deserialization of untrusted data in SQL Server allows an authorized attacker to execute code over a network.
CVE-2026-77483High· 8.8Weak authentication in SQL Server allows an authorized attacker to elevate privileges over a network.
Weak authentication in SQL Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-77482High· 8.8Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
CVE-2026-77481High· 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-2026-77480High· 8.8Insufficient granularity of access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Insufficient granularity of access control in SQL Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-73029Medium· 6.5Buffer over-read in SQL Server allows an authorized attacker to disclose information over a network.
Buffer over-read in SQL Server allows an authorized attacker to disclose information over a network.
CVE-2026-73028High· 8.8Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-73026High· 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-2026-73025Critical· 9.8Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.
Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-73024High· 7.8Heap-based buffer overflow in Windows Services for NFS ONCRPC XDR Driver allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Services for NFS ONCRPC XDR Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-73023High· 8.8Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
CVE-2026-73022High· 7.0Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.
Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.