Microsoft has 2,953 CVEs on record between 2013 and 2026. Disclosure cadence is accelerating: 2137 in the last 90 days against 419 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
- 2137 prev 419
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-2026-66809Medium· 5.5Microsoft Office Graphics Component Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-66808High· 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-2026-66807High· 7.8Microsoft Office Graphics Component Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-66806Medium· 5.5Microsoft Office Word Information Disclosure Vulnerability
Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
CVE-2026-66805High· 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-2026-66802High· 8.1Windows Device Health Attestation (DHA) Remote Code Execution Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Device Health Attestation (DHA) allows an unauthorized attacker to execute code over a network.
CVE-2026-65810High· 7.8.NET Framework Elevation of Privilege Vulnerability
Relative path traversal in .NET Framework allows an unauthorized attacker to elevate privileges locally.
CVE-2026-65799Medium· 6.7Windows DNS Elevation of Privilege Vulnerability
Integer overflow or wraparound in Windows DNS allows an authorized attacker to elevate privileges locally.
CVE-2026-65798Medium· 6.7Windows DNS Elevation of Privilege Vulnerability
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
CVE-2026-65797Medium· 6.7Windows DNS Elevation of Privilege Vulnerability
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
CVE-2026-65796High· 8.1Windows iSCSI Target Service Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.
CVE-2026-65794Medium· 6.5Windows SMB Client Information Disclosure Vulnerability
Buffer over-read in Windows SMB Client allows an unauthorized attacker to disclose information over a network.
CVE-2026-65791Critical· 9.8Windows iSCSI Target Service Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.
CVE-2026-65790High· 7.8Windows Message Queuing Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Message Queuing allows an authorized attacker to elevate privileges locally.
CVE-2026-65782High· 7.0Windows Autopilot Elevation of Privilege Vulnerability
Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
CVE-2026-65781High· 7.0Windows Autopilot Elevation of Privilege Vulnerability
Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
CVE-2026-65780High· 7.0Windows Autopilot Elevation of Privilege Vulnerability
Double free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
CVE-2026-65779High· 7.0Windows Autopilot Elevation of Privilege Vulnerability
Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
CVE-2026-65778High· 7.0Windows Autopilot Elevation of Privilege Vulnerability
Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
CVE-2026-65777Medium· 5.3Active Directory Security Feature Bypass Vulnerability
Inadequate encryption strength in Windows Active Directory allows an authorized attacker to bypass a security feature over a network.
CVE-2026-65775High· 7.8Windows Win32k Elevation of Privilege Vulnerability
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-68817High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68814High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68804High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Numeric truncation error in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-63522High· 7.8Azure SQL Database Elevation of Privilege Vulnerability
Incorrect permission assignment for critical resource in Azure SQL Database allows an authorized attacker to elevate privileges locally.
CVE-2026-56179High· 8.3Windows Network Address Translation (NAT) Spoofing Vulnerability
Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.
CVE-2026-62917Medium· 4.6Microsoft SharePoint Server Spoofing Vulnerability
Improper input validation in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVE-2026-62869High· 8.8Azure Entra ID Spoofing Vulnerability
Insufficient verification of data authenticity in Azure Entra ID allows an authorized attacker to perform spoofing over a network.
CVE-2026-62839Medium· 6.5Microsoft SharePoint Server Spoofing Vulnerability
Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVE-2026-62738Medium· 5.5Windows Management Instrumentation Information Disclosure Vulnerability
Out-of-bounds read in Windows Management Instrumentation allows an authorized attacker to disclose information locally.