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-2026-70304Medium· 6.7Windows DNS Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally.
CVE-2026-72971Medium· 5.5Windows Container Isolation FS Filter Driver (unionfs.sys) Tampering Vulnerability
Improper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to perform tampering locally.
CVE-2026-70355High· 7.3Microsoft SharePoint Server Elevation of Privilege Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
CVE-2026-70348Medium· 5.5Windows Management Services Denial of Service Vulnerability
Improper link resolution before file access ('link following') in Windows Management Services allows an authorized attacker to deny service locally.
CVE-2026-70347High· 7.8Windows Installer Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-70346High· 7.8Windows Installer Elevation of Privilege Vulnerability
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-70345High· 7.8Windows Installer Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-70344High· 7.8Windows Installer Elevation of Privilege Vulnerability
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-70339Medium· 5.4Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-71331High· 8.1Windows Device Health Attestation (DHA) Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows Device Health Attestation (DHA) allows an unauthorized attacker to execute code over a network.
CVE-2026-70338High· 7.8Microsoft PowerShell Security Feature Bypass Vulnerability
Improper control of generation of code ('code injection') in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.
CVE-2026-70337High· 8.8Microsoft PowerShell Remote Code Execution Vulnerability
Relative path traversal in Microsoft PowerShell Core allows an unauthorized attacker to execute code over a network.
CVE-2026-70326High· 8.8Microsoft SharePoint Server Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
CVE-2026-70306Critical· 9.3Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-70130High· 8.4Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-65768High· 8.8Microsoft Teams Remote Code Execution Vulnerability
Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Teams for Android allows an unauthorized attacker to execute code over a network.
CVE-2026-63520High· 8.1PoCMicrosoft SharePoint Server Remote Code Execution Vulnerability
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
CVE-2026-63516Medium· 6.5Microsoft SharePoint Server Spoofing Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVE-2026-63514High· 8.8Microsoft SharePoint Server Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
CVE-2026-63512Medium· 6.5Microsoft SharePoint Server Tampering Vulnerability
Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to perform tampering over a network.
CVE-2026-62837Medium· 6.5Microsoft SharePoint Server Information Disclosure Vulnerability
Relative path traversal in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
CVE-2026-62829Medium· 4.6Microsoft SharePoint Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVE-2026-62827High· 8.8Microsoft SharePoint Server Elevation of Privilege Vulnerability
Improper authentication in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
CVE-2026-57105High· 8.0Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVE-2026-58612High· 7.4PowerShell Information Disclosure Vulnerability
Server-side request forgery (ssrf) in Microsoft PowerShell Core allows an unauthorized attacker to disclose information over a network.
CVE-2026-47299High· 7.2Azure Monitor Agent Elevation of Privilege Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Azure Monitor Agent allows an authorized attacker to elevate privileges over a network.
CVE-2026-40375Medium· 6.5Microsoft Dynamics Business Central Information Disclosure Vulnerability
Missing authorization in Dynamics Business Central allows an authorized attacker to disclose information over a network.
CVE-2026-61361High· 7.0Windows DHCP Client Remote Code Execution Vulnerability
Use after free in Windows DHCP Client allows an authorized attacker to execute code locally.
CVE-2026-62705High· 7.0Microsoft Brokering File System Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-62702Medium· 6.8Windows Graphics Kernel Denial of Service Vulnerability
Null pointer dereference in Windows Graphics Kernel allows an unauthorized attacker to deny service over a network.