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-2026-45488Medium· 5.4User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-45499Critical· 9.9Azure OpenAI Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Azure OpenAI allows an authorized attacker to elevate privileges over a network.
CVE-2026-26145Medium· 4.8Microsoft Azure Synapse Elevation of Privilege Vulnerability
Improper access control in Azure Synapse allows an authorized attacker to elevate privileges over a network.
CVE-2026-57100Critical· 9.9Microsoft Entra Provisioning Service Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate privileges over a network.
CVE-2026-54998High· 8.8PoCMicrosoft Exchange Online Elevation of Privilege Vulnerability
Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
CVE-2026-41106Critical· 9.3Microsoft 365 Copilot Elevation of Privilege Vulnerability
Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-50521High· 8.3Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
CVE-2026-49451High· 7.5Microsoft.OpenAPI: Circular schema references may terminate OpenAPI parsing
Microsoft.OpenAPI: Circular schema references may terminate OpenAPI parsing
CVE-2026-49336Medium@microsoft/kiota-http-fetchlibrary: Bearer token and Cookie leak across origin on redirect due to case-mismatched scrub in fetchRequestAdapter
@microsoft/kiota-http-fetchlibrary: Bearer token and Cookie leak across origin on redirect due to case-mismatched scrub in fetchRequestAdapter
CVE-2026-32208High· 8.8Microsoft Entra ID Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Entra ID allows an authorized attacker to perform spoofing over a network.
CVE-2026-45480Critical· 10.0Azure Active Directory Elevation of Privilege Vulnerability
Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-42895Medium· 6.5Microsoft Copilot Tampering Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.
CVE-2026-48582Critical· 9.6Microsoft Exchange Online Elevation of Privilege Vulnerability
Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
CVE-2026-47645High· 8.8Microsoft 365 Copilot's Business Chat Elevation of Privilege Vulnerability
Url redirection to untrusted site ('open redirect') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-50519Medium· 6.5Initialization of a resource with an insecure default in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to disclose information over a network.
Initialization of a resource with an insecure default in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to disclose information over a network.
CVE-2026-48584Critical· 9.9Execution with unnecessary privileges in Azure Synapse allows an authorized attacker to elevate privileges over a network.
Execution with unnecessary privileges in Azure Synapse allows an authorized attacker to elevate privileges over a network.
CVE-2026-47633High· 7.5Microsoft Cost Management Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Cost Management Interactive Experiences allows an unauthorized attacker to disclose information over a network.
CVE-2026-32174High· 7.7Azure Bot Service Elevation of Privilege Vulnerability
Improper authentication in Azure Bot Service allows an authorized attacker to elevate privileges over a network.
CVE-2026-54130Critical· 9.8M365 Copilot Information Disclosure Vulnerability
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
CVE-2026-47647Critical· 9.9Dynamics 365 Elevation of Privilege Vulnerability
Improper access control in Microsoft Dynamics 365 allows an authorized attacker to elevate privileges over a network.
CVE-2026-50656High· 7.8PoCMicrosoft Defender Elevation of Privilege Vulnerability
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "RoguePlanet ".
CVE-2026-45486High· 7.8Microsoft Word Remote Code Execution Vulnerability
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-45485Low· 3.3Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-45475High· 7.8Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-41108High· 7.0Windows DNS Client Elevation of Privilege Vulnerability
Heap-based buffer overflow in Microsoft Windows DNS allows an authorized attacker to elevate privileges locally.
CVE-2026-45472High· 8.4Microsoft Office Remote Code Execution Vulnerability
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-45468Medium· 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-2026-45467Medium· 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-2026-45483Medium· 4.6Microsoft Office Project Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Project Server allows an authorized attacker to perform spoofing over a network.
CVE-2026-45474High· 8.4Microsoft Office Remote Code Execution Vulnerability
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.