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-2026-20821Medium· 6.2Exposure of sensitive information to an unauthorized actor in Windows Remote Procedure Call allows an unauthorized attacker to disclose information locally.
Exposure of sensitive information to an unauthorized actor in Windows Remote Procedure Call allows an unauthorized attacker to disclose information locally.
CVE-2026-20820High· 7.8PoCHeap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-20819Medium· 5.5Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information locally.
Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information locally.
CVE-2026-20817High· 7.8PoCImproper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Improper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
CVE-2026-20816High· 7.8Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.
Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-20815High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally.
CVE-2026-20814High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-20812Medium· 6.5Improper input validation in Windows LDAP - Lightweight Directory Access Protocol allows an authorized attacker to perform tampering over a network.
Improper input validation in Windows LDAP - Lightweight Directory Access Protocol allows an authorized attacker to perform tampering over a network.
CVE-2026-20811High· 7.8Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
CVE-2026-20809High· 7.8Time-of-check time-of-use (toctou) race condition in Windows Kernel Memory allows an authorized attacker to elevate privileges locally.
Time-of-check time-of-use (toctou) race condition in Windows Kernel Memory allows an authorized attacker to elevate privileges locally.
CVE-2026-20808High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Printer Association Object allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Printer Association Object allows an authorized attacker to elevate privileges locally.
CVE-2026-20805Medium· 5.5CISA KEV0dayPoCExposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.
Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.
CVE-2026-20804High· 7.7Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
CVE-2026-20803High· 7.2Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.
Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.
CVE-2025-62224Medium· 5.5User interface (ui) misrepresentation of critical information in Microsoft Edge for Android allows an authorized attacker to perform spoofing over a network.
User interface (ui) misrepresentation of critical information in Microsoft Edge for Android allows an authorized attacker to perform spoofing over a network.
CVE-2025-9611High· 7.2PoCMicrosoft Playwright MCP Server versions prior to 0.0.40 fails to validate the Origin header on incoming connections
Microsoft Playwright MCP Server versions prior to 0.0.40 fails to validate the Origin header on incoming connections. This allows an attacker to perform a DNS rebinding attack via a victim’s web browser and send unauthorized requests to …
CVE-2025-64677High· 8.2Improper neutralization of input during web page generation ('cross-site scripting') in Office Out-of-Box Experience allows an unauthorized attacker to perform spoofing over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Office Out-of-Box Experience allows an unauthorized attacker to perform spoofing over a network.
CVE-2025-65046Low· 3.1Microsoft Edge (Chromium-based) Spoofing Vulnerability
Microsoft Edge (Chromium-based) Spoofing Vulnerability
CVE-2025-64669High· 7.8Improper access control in Windows Admin Center allows an authorized attacker to elevate privileges locally.
Improper access control in Windows Admin Center allows an authorized attacker to elevate privileges locally.
CVE-2025-64672High· 8.8Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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-2025-64671High· 8.4Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to execute code locally.
Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to execute code locally.
CVE-2025-64667Medium· 5.3User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
CVE-2025-64666High· 7.5Improper input validation in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Improper input validation in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
CVE-2025-62572High· 7.8Out-of-bounds read in Application Information Services allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Application Information Services allows an authorized attacker to elevate privileges locally.
CVE-2025-62570High· 7.1Improper access control in Windows Camera Frame Server Monitor allows an authorized attacker to disclose information locally.
Improper access control in Windows Camera Frame Server Monitor allows an authorized attacker to disclose information locally.
CVE-2025-62569High· 7.0Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
CVE-2025-62564High· 7.8Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2025-62563High· 7.8Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2025-62561High· 7.8Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2025-62560High· 7.8Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.