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-2026-44821Medium· 5.5Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-45456High· 8.4Microsoft Outlook and Word Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-45453Medium· 5.4Microsoft SharePoint Server 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-2026-44823High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Numeric truncation error in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-45466Low· 3.3Microsoft Word Information Disclosure Vulnerability
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
CVE-2026-45460Medium· 4.7Microsoft Office Information Disclosure Vulnerability
Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-45458High· 8.4Microsoft Outlook and Word Remote Code Execution Vulnerability
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-45487High· 7.8Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
Time-of-check time-of-use (TOCTOU) race condition in Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
CVE-2026-45461High· 8.4Microsoft Office Remote Code Execution Vulnerability
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-45605High· 7.8Windows Bluetooth Service Elevation of Privilege Vulnerability
Use after free in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.
CVE-2026-45640High· 7.0Windows Bluetooth Port Driver Elevation of Privilege Vulnerability
Use after free in Windows Bluetooth Port Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-45607High· 8.4Windows Hyper-V Remote Code Execution Vulnerability
Out-of-bounds read in Windows Hyper-V allows an unauthorized attacker to execute code locally.
CVE-2026-45606Medium· 5.5Microsoft UxTheme Library (uxtheme.dll) Denial of Service Vulnerability
Out-of-bounds read in Microsoft UxTheme Library (uxtheme.dll) allows an authorized attacker to deny service locally.
CVE-2026-45645High· 7.8Microsoft Office Remote Code Execution Vulnerability
Untrusted pointer dereference in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-45641High· 8.4Windows Hyper-V Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Windows Hyper-V allows an unauthorized attacker to execute code locally.
CVE-2026-45634Medium· 5.5Windows DHCP Client Information Disclosure Vulnerability
Out-of-bounds read in Windows DHCP Server allows an authorized attacker to disclose information locally.
CVE-2026-45643High· 7.8Microsoft Word Remote Code Execution Vulnerability
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-45642Low· 3.9Microsoft Azure Attestation service and Device Health Attestation Service Spoofing Vulnerability
Improper input validation in Microsoft Azure Attestation service and Device Health Attestation Service allows an authorized attacker to perform spoofing with a physical attack.
CVE-2026-45649High· 7.1Office for Android Spoofing Vulnerability
Improper access control in Office for Android allows an unauthorized attacker to perform spoofing locally.
CVE-2026-45648High· 8.8Windows Active Directory Domain Services Remote Code Execution Vulnerability
Stack-based buffer overflow in Active Directory Domain Services allows an authorized attacker to execute code over a network.
CVE-2026-45656High· 7.8UEFI Secure Boot Security Feature Bypass Vulnerability
Protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feature locally.
CVE-2026-45655Medium· 5.3Windows BitLocker Security Feature Bypass Vulnerability
Protection mechanism failure in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.
CVE-2026-45650Medium· 4.3Microsoft Bing Search Spoofing Vulnerability
User interface (ui) misrepresentation of critical information in Microsoft Bing allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-47287Medium· 6.5Visual Studio Code Tampering Vulnerability
Relative path traversal in Visual Studio Code allows an unauthorized attacker to perform tampering over a network.
CVE-2026-45657Critical· 9.8Windows Kernel Remote Code Execution Vulnerability
Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.
CVE-2026-47291Critical· 9.8HTTP.sys Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.
CVE-2026-47289High· 8.8Remote Desktop Client Remote Code Execution Vulnerability
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-47288High· 7.1Windows Kerberos Key Distribution Center (KDC) Remote Code Execution
Integer overflow or wraparound in Windows Kerberos allows an authorized attacker to execute code over an adjacent network.
CVE-2026-47298High· 8.0Microsoft SharePoint Server Remote Code Execution Vulnerability
Improper authorization in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
CVE-2026-41092High· 7.8Microsoft Kinect Elevation of Privilege Vulnerability
Improper access control in Microsoft Kinect allows an authorized attacker to elevate privileges locally.