microsoft has 4,538 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2929 in the last 90 days against 916 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
- 2929 prev 916
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-2026-97827Medium· 6.5Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97826Medium· 6.5Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97825Medium· 6.5Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97824Medium· 6.5Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97823Medium· 6.5Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97822Medium· 6.5Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97821Medium· 6.5Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97820Medium· 6.5Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97819Medium· 6.5Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97817Medium· 6.5Heap-based buffer overflow in DNS Server allows an authorized attacker to disclose information over a network.
Heap-based buffer overflow in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97816Critical· 9.8Use after free in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.
Use after free in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.
CVE-2026-97815Critical· 9.8Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
CVE-2026-97814Critical· 9.8Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code over a network.
CVE-2026-97813Medium· 6.5Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to disclose information over a network.
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to disclose information over a network.
CVE-2026-97812High· 7.0Double free in Windows Update Orchestrator Service allows an authorized attacker to elevate privileges locally.
Double free in Windows Update Orchestrator Service allows an authorized attacker to elevate privileges locally.
CVE-2026-97811High· 7.8Double free in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.
Double free in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.
CVE-2026-97810High· 7.0Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
CVE-2026-97809High· 7.8Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
CVE-2026-97808High· 7.0Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
CVE-2026-97807High· 7.8Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
CVE-2026-97806High· 7.8Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
CVE-2026-97805Critical· 9.8Out-of-bounds read in Windows Partition Management Driver allows an unauthorized attacker to execute code over a network.
Out-of-bounds read in Windows Partition Management Driver allows an unauthorized attacker to execute code over a network.
CVE-2026-97804High· 7.8Heap-based buffer overflow in HID class driver allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in HID class driver allows an authorized attacker to elevate privileges locally.
CVE-2026-97803High· 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-2026-97801High· 7.5Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.
Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.
CVE-2026-97800High· 7.8Incorrect permission assignment for critical resource in Windows Mobile Broadband allows an authorized attacker to elevate privileges locally.
Incorrect permission assignment for critical resource in Windows Mobile Broadband allows an authorized attacker to elevate privileges locally.
CVE-2026-97799High· 7.8Improper verification of cryptographic signature in Windows Audio Service allows an authorized attacker to elevate privileges locally.
Improper verification of cryptographic signature in Windows Audio Service allows an authorized attacker to elevate privileges locally.
CVE-2026-97798High· 7.8Improper neutralization of argument delimiters in a command ('argument injection') in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Improper neutralization of argument delimiters in a command ('argument injection') in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
CVE-2026-97794High· 7.8Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
CVE-2026-97793High· 7.0Missing authentication for critical function in Windows Setup and Deployment allows an authorized attacker to elevate privileges locally.
Missing authentication for critical function in Windows Setup and Deployment allows an authorized attacker to elevate privileges locally.