Microsoft vulnerabilities
Published CVEs affecting Microsoft products: 5262 record(s), with severity, exploitation and fixes.
Windows Server 2025 3001Windows Server 2025 (Server Core installation) 2987Windows 11 Version 24H2 2873Windows 11 24h2 2856Windows 11 Version 25H2 2825Windows Server 2022 2820Windows 11 25h2 2808Windows Server 2019 2708Windows Server 2019 (Server Core installation) 2657Windows 10 1809 2624Windows 10 Version 1809 2590Windows 10 Version 21H2 2567Windows 11 version 26H1 2555Windows 10 21h2 2551Windows 10 Version 22H2 2550Windows 10 22h2 2537Windows 11 26h1 2516Windows 11 version 23H2 2383Windows 11 23h2 2364Windows Server 2016 2297Windows Server 2016 (Server Core installation) 2233Windows 10 1607 2214Windows 10 Version 1607 2171Windows Server 2012 1885Windows Server 2012 R2 1807Windows Server 2012 R2 (Server Core installation) 1798Windows Server 2012 (Server Core installation) 1693Windows 11 Version 26H2 1007Windows 11 26h2 980Microsoft 365 Apps for Enterprise 576365 Apps 575Microsoft Office LTSC 2024 554Microsoft Office LTSC 2021 551Windows Server 2022 23h2 544Windows Server 2022, 23H2 Edition (Server Core installation) 543Office 2021 465Office 2024 465Microsoft Office LTSC for Mac 2021 462Microsoft Office LTSC for Mac 2024 462Microsoft Office 365 for Mac 389
CVE-2026-54998
High · 8.8
CWE-863 Jul 2, 2026
Microsoft Exchange Online Elevation of Privilege Vulnerability
Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
CVE-2026-45499
High · 8.8
CWE-918 Jul 2, 2026
Azure OpenAI Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Azure OpenAI allows an authorized attacker to elevate privileges over a network.
CVE-2026-41106
Critical · 9.3
CWE-601 Jul 2, 2026
Microsoft 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-2026-26145
Critical · 9.8
CWE-284 Jul 2, 2026
Microsoft Azure Synapse Elevation of Privilege Vulnerability
Improper access control in Azure Synapse allows an authorized attacker to elevate privileges over a network.
CVE-2026-50521
High · 8.3
CWE-416 Jul 1, 2026
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
CVE-2026-49451
High · 7.5
CWE-674 Jun 30, 2026
Microsoft.OpenAPI: Circular schema references may terminate OpenAPI parsing
The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model. From 2.0.0-preview11 until 2.7.5 and 3.5.4, a small OpenAPI document containing a circular schema reference can cause process termination through stack overflow in Microsoft.OpenApi. The issue affects OpenAPI document parsing through public OpenAPI.NET reader APIs and has been confirmed across both JSON and YAML reader paths. This vulnerability is fixed in 2.7.5 and 3.5.4.
CVE-2025-66389
High · 7.5
CWE-552 Jun 22, 2026
Files or Directories Accessible to External Parties in Microsoft Github Copilot
GitHub Copilot 1.372.0 allows filesystem access outside of a workspace folder (without user approval) via a file-handler URI parameter to fetch_webpage. Therefore, exfiltration could occur if there is indirect prompt injection.
CVE-2026-50519
High · 7.5
CWE-1188 Jun 19, 2026
Microsoft Visual Studio Code CoPilot Chat Security Feature Bypass Vulnerability
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-2026-48584
High · 8.8
CWE-250 Jun 19, 2026
Microsoft Azure Synapse Elevation of Privilege Vulnerability
Execution with unnecessary privileges in Azure Synapse allows an authorized attacker to elevate privileges over a network.
CVE-2026-48582
Critical · 9.6
CWE-862 Jun 19, 2026
Microsoft Exchange Online - Missing Authorization Leading to Privilege Escalation
Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
CVE-2026-47645
High · 8.8
CWE-601 Jun 19, 2026
Microsoft 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-2026-45480
Critical · 10.0
CWE-287 Jun 19, 2026
Microsoft Azure Active Directory Improper Authentication Privilege Escalation (CVE-2026-45480)
Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-42895
High · 7.5
CWE-77 Jun 19, 2026
Microsoft 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-2026-32208
Medium · 5.4
CWE-79 Jun 19, 2026
Microsoft 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-2026-49336
Medium · 5.5
CWE-178 Jun 19, 2026
@microsoft/kiota-http-fetchlibrary: Bearer token and Cookie leak across origin on redirect due to case-mismatched scrub in fetchRequestAdapter
@microsoft/kiota-http-fetchlibrary provides TypeScript libraries for Kiota-generated API clients. In versions 1.0.0-preview.97 through 1.0.0-preview.101, `@microsoft/kiota-http-fetchlibrary`'s `RedirectHandler` is documented as stripping `Authorization` and `Cookie` from cross-origin redirect targets, but the default `scrubSensitiveHeaders` callback in `RedirectHandlerOptions` uses case-sensitive property deletion (`delete headers.Authorization`, `delete headers.Cookie`) on a headers object that `FetchRequestAdapter.getRequestFromRequestInformation` has already lower-cased. The delete therefore targets keys that do not exist, the scrub is a no-op, and any Bearer token or Cookie attached by a kiota-generated SDK is forwarded to an attacker-controlled host across a 30x redirect. This is reachable in the default middleware chain (`MiddlewareFactory.getDefaultMiddlewares`) with no custom configuration, and applies to every kiota-generated TypeScript SDK that uses `BaseBearerTokenAuthenticationProvider` or any other authentication provider that sets the `Authorization` request header. Version 1.0.0-preview.102 patches the issue.
CVE-2025-62821
Critical · 9.1
CWE-125 Jun 19, 2026
Out-of-bounds Read in Microsoft Heif Image Extension
Microsoft HEIF Image Extensions 1.2.22.0 has an out-of-bounds read because CHEIFItemInfoEntry_GetDataSize can return success while leaving the reported data size as 0. This causes a caller to make a 1-byte allocation. Later, CopyPixels computes copy_size = stride * abs(roi_height) but does not check the source buffer length before a memmove call.
CVE-2026-54130
High · 7.5
CWE-306 Jun 18, 2026
M365 Copilot Information Disclosure Vulnerability
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
CVE-2026-47647
Critical · 9.9
CWE-284 Jun 18, 2026
Microsoft Dynamics 365 Improper Access Control Privilege Escalation (CVE-2026-47647)
Improper access control in Microsoft Dynamics 365 allows an authorized attacker to elevate privileges over a network.
CVE-2026-47633
High · 7.5
CWE-200 Jun 18, 2026
Microsoft 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-2026-32174
High · 8.8
CWE-287 Jun 18, 2026
Azure Bot Service Elevation of Privilege Vulnerability
Improper authentication in Azure Bot Service allows an authorized attacker to elevate privileges over a network.
CVE-2026-50656
High · 7.0
CWE-59 Jun 16, 2026
Microsoft 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-2026-50512
High · 7.8
CWE-306 Jun 9, 2026
Microsoft PC Manager Elevation of Privilege Vulnerability
Missing authentication for critical function in Microsoft PC Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-50511
High · 7.8
CWE-59 Jun 9, 2026
Microsoft PC Manager Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Microsoft PC Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-50508
High · 7.5
CWE-200 Jun 9, 2026
Windows NTLM Spoofing Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-50507
Medium · 6.8
CWE-306 Jun 9, 2026
Windows BitLocker Security Feature Bypass Vulnerability
Missing authentication for critical function in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.