Microsoft has 2,953 CVEs on record between 2013 and 2026. Disclosure cadence is accelerating: 2136 in the last 90 days against 414 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 (644), Windows 10 Version 1607 (481), 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
- 2136 prev 414
Weakness classes
Products
- windows_10_1607 644
- Windows 10 Version 1607 481
- Microsoft 365 Apps for Enterprise 209
- windows_10 122
- 365_apps 115
- windows_10_1809 106
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-2026-44800High· 7.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
CVE-2026-42990Critical· 9.8Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network.
CVE-2026-42982High· 7.8Improper validation of consistency within input in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
Improper validation of consistency within input in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
CVE-2026-42975High· 8.0Heap-based buffer overflow in Windows Bluetooth Port Driver allows an unauthorized attacker to execute code over an adjacent network.
Heap-based buffer overflow in Windows Bluetooth Port Driver allows an unauthorized attacker to execute code over an adjacent network.
CVE-2026-42900High· 8.1Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Store allows an unauthorized attacker to elevate privileges over a network.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Store allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-41087Medium· 5.5Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
CVE-2026-40422Medium· 5.5Use of uninitialized resource in Windows File Explorer allows an authorized attacker to disclose information locally.
Use of uninitialized resource in Windows File Explorer allows an authorized attacker to disclose information locally.
CVE-2026-40400High· 8.0Relative path traversal in Windows PowerShell allows an authorized attacker to execute code over a network.
Relative path traversal in Windows PowerShell allows an authorized attacker to execute code over a network.
CVE-2026-40378High· 7.5Memory allocation with excessive size value in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.
Memory allocation with excessive size value in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.
CVE-2026-34349Medium· 5.5Exposure of sensitive information to an unauthorized actor in Windows Media allows an authorized attacker to disclose information locally.
Exposure of sensitive information to an unauthorized actor in Windows Media allows an authorized attacker to disclose information locally.
CVE-2026-34348Medium· 6.5PoCProtection mechanism failure in Windows Event Logging Service allows an authorized attacker to disclose information over a network.
Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to disclose information over a network.
CVE-2026-34346Medium· 5.5Cleartext transmission of sensitive information in Windows Ancillary Function Driver for WinSock allows an authorized attacker to disclose information locally.
Cleartext transmission of sensitive information in Windows Ancillary Function Driver for WinSock allows an authorized attacker to disclose information locally.
CVE-2026-34328Medium· 5.5Exposure of sensitive information to an unauthorized actor in Windows Audio Service allows an authorized attacker to disclose information locally.
Exposure of sensitive information to an unauthorized actor in Windows Audio Service allows an authorized attacker to disclose information locally.
CVE-2026-33842Medium· 5.5Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
CVE-2026-58596High· 8.3Untrusted pointer dereference in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.
Untrusted pointer dereference in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-58281High· 8.3Deserialization of untrusted data in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Deserialization of untrusted data in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-47646Critical· 9.3Dynamics 365 Customer Voice Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Dynamics 365 Customer Voice allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-58525High· 8.2Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
Improper access control in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-57988High· 7.1Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Relative path traversal in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-57987Medium· 6.5Microsoft Edge (Chromium-based) Spoofing Vulnerability
Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-57986High· 7.5Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-57985High· 7.6Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Improper input validation in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-57984High· 7.5Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-57981High· 8.8Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-58278Medium· 5.4Microsoft Edge (Chromium-based) Spoofing Vulnerability
Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-58276High· 7.5Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-57992High· 7.5Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-57991High· 7.4Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
Improper link resolution before file access ('link following') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
CVE-2026-57983High· 8.7Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
Improper authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-57977High· 7.1Microsoft Edge (Chromium-based) Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.