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vendor5 exploited in the wild

Microsoft

300 CVEs published in the last four months and 12 stories. Exploited flaws first.

Critical109
High191
Medium0
Exploited (KEV)5

Patch these first

CVECVSSSeverityProductSummaryPublished
CVE-2026-50522exploited9.8criticalsharepoint serverDeserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code o99d ago
CVE-2026-58644exploited9.8criticalsharepoint serverDeserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code o99d ago
CVE-2026-55040exploited9.1criticalsharepoint serverWeak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature ov99d ago
CVE-2026-45659exploited8.8highsharepoint serverDeserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code ove152d ago
CVE-2026-65660exploited8.8highsharepoint serverImproper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized atta71d ago

All recent CVEs

CVECVSSSeverityProductSummaryPublished
CVE-2026-6950210criticalazure sql databaseServer-side request forgery (ssrf) in Azure SQL Database allows an unauthorized attacker to elevate privileges ove61d ago
CVE-2026-6350810criticalplanetary computerMissing authentication for critical function in Microsoft Planetary Computer Pro allows an unauthorized attacker t76d ago
CVE-2026-5863010criticalazure app service for linuxImproper access control in Azure App Service allows an unauthorized attacker to elevate privileges over a network.89d ago
CVE-2026-6566710criticalteamsMissing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.76d ago
CVE-2026-6580110criticalexchange onlineServer-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privile62d ago
CVE-2026-6282510criticalazure key vaultImproper authentication in Azure Key Vault allows an unauthorized attacker to elevate privileges over a network.90d ago
CVE-2026-6680310criticalazure cosmos dbImproper access control in Azure Cosmos DB allows an unauthorized attacker to execute code over a network.83d ago
CVE-2026-4041210criticalazure orbital spatioUnrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute152d ago
CVE-2026-6983610criticalentra idDeserialization of untrusted data in Microsoft Entra ID allows an unauthorized attacker to execute code over a net62d ago
CVE-2026-4548010criticalazure active directoryImproper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a net124d ago
CVE-2026-4110410criticalplanetary computerDeserialization of untrusted data in Microsoft Planetary Computer Pro allows an unauthorized attacker to disclose 152d ago
CVE-2026-6577010criticalazure managed instance for apache cassandraImproper neutralization of argument delimiters in a command ('argument injection') in Azure Managed Instance for A62d ago
CVE-2026-6581610criticalazure web appsUse of incorrectly-resolved name or reference in Azure Arc allows an unauthorized attacker to elevate privileges o62d ago
CVE-2026-5827510criticalazure dnsMissing authorization in Azure DNS allows an unauthorized attacker to elevate privileges over a network.90d ago
CVE-2026-3216910criticalazure cloud shellServer-side request forgery (ssrf) in Azure Cloud Shell allows an unauthorized attacker to elevate privileges over216d ago
CVE-2026-4282210criticalazure localImproper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileg156d ago
CVE-2026-5710610criticalpurview data governanceServer-side request forgery (ssrf) in Data Quality allows an unauthorized attacker to elevate privileges over a ne89d ago
CVE-2026-4856710criticalazure horizondbAuthentication bypass by spoofing in Azure HorizonDB allows an unauthorized attacker to elevate privileges over a 139d ago
CVE-2026-5616210criticalazure sql databaseImproper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network76d ago
CVE-2026-5616310criticalazure kubernetes serviceMissing authentication for critical function in Microsoft Azure Kubernetes Service allows an unauthorized attacker89d ago
CVE-2026-4290110criticalentra idOrigin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network152d ago
CVE-2026-2365210criticalpower pagesImproper neutralization of special elements used in a command ('command injection') in Microsoft Power Pages allow152d ago
CVE-2026-5619110criticalexchange onlineImproper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a n90d ago
CVE-2026-6955510criticalazure arcIncorrect authorization in Azure Arc allows an unauthorized attacker to elevate privileges over a network.62d ago
CVE-2026-4728010criticalazure resource managerImproper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over152d ago
CVE-2026-505179.9critical365 copilotDeserialization of untrusted data in M365 Copilot allows an authorized attacker to execute code over a network.90d ago
CVE-2026-628309.9criticalazure sre agentMissing authorization in Azure SRE Agent allows an authorized attacker to elevate privileges over a network.76d ago
CVE-2026-687899.9criticalazure sql databaseImproper neutralization of special elements used in an sql command ('sql injection') in Azure SQL Database allows 62d ago
CVE-2026-591159.9criticalentra provisioning service'.../...//' in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate privileg76d ago
CVE-2026-504819.9criticalazure active directoryModification of assumed-immutable data (maid) in Azure Active Directory allows an authorized attacker to elevate p76d ago
CVE-2026-570929.9criticalwindows 10 1607Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network.99d ago
CVE-2026-261379.9critical365 copilot chatServer-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over 216d ago
CVE-2026-428239.9criticalazure logic appsImproper access control in Azure Logic Apps allows an authorized attacker to elevate privileges over a network.162d ago
CVE-2026-404119.9criticalazure virtual network gatewayImproper input validation in Azure Virtual Network Gateway allows an authorized attacker to execute code over a ne152d ago
CVE-2026-698519.9criticalentra idServer-side request forgery (ssrf) in Azure Active Directory allows an authorized attacker to elevate privileges o62d ago
CVE-2026-505159.9criticalazure service busDeserialization of untrusted data in Azure Service Bus allows an authorized attacker to execute code over a networ76d ago
CVE-2026-476479.9criticaldynamics 365Improper access control in Microsoft Dynamics 365 allows an authorized attacker to elevate privileges over a netwo125d ago
CVE-2026-635099.9criticalfabricRelative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.62d ago
CVE-2026-485849.9criticalazure synapseExecution with unnecessary privileges in Azure Synapse allows an authorized attacker to elevate privileges over a 124d ago
CVE-2026-428989.9criticaldynamics 365Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an author162d ago
CVE-2026-541209.9criticalsurface management servicesImproper input validation in Microsoft Surface allows an authorized attacker to execute code over a network.90d ago
CVE-2026-687829.9criticalazure sql databaseImproper neutralization of special elements used in an sql command ('sql injection') in Azure SQL Database allows 62d ago
CVE-2026-571009.9criticalentra provisioning serviceServer-side request forgery (ssrf) in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attac111d ago
CVE-2026-454999.9criticalazure openaiServer-side request forgery (ssrf) in Azure OpenAI allows an authorized attacker to elevate privileges over a netw111d ago
CVE-2026-628739.8criticalwindows admin centerImproper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to 76d ago
CVE-2026-628789.8criticalwindows 10 1607Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.71d ago
CVE-2026-505189.8criticalwindows 10 1607Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.99d ago
CVE-2026-591249.8criticalwindows appDeserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attack71d ago
CVE-2026-410969.8criticalwindows 11 23h2Heap-based buffer overflow in Microsoft Windows DNS allows an unauthorized attacker to execute code over a network162d ago
CVE-2026-561599.8criticalwindows 10 1607Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.99d ago
CVE-2026-491729.8criticalwindows 10 1607Heap-based buffer overflow in Windows FTP Service allows an unauthorized attacker to execute code over a network.99d ago
CVE-2026-628159.8criticalwindows 11 23h2Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.71d ago
CVE-2026-541189.8criticalsql server 2016Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.99d ago
CVE-2026-541309.8critical365 copilotMissing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose informati125d ago
CVE-2026-549909.8criticalwindows 11 24h2Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network99d ago
CVE-2026-456579.8criticalwindows 11 23h2Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.134d ago
CVE-2026-541179.8criticalsql server 2016Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.99d ago
CVE-2026-472919.8criticalwindows 10 1607Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.134d ago
CVE-2026-50522exploited9.8criticalsharepoint serverDeserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code o99d ago
CVE-2026-476439.8criticalazure stack edgeExternal control of file name or path in Azure Stack Edge allows an unauthorized attacker to execute code over a n134d ago
CVE-2026-429909.8criticalwindows 10 1607Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a networ99d ago
CVE-2026-504479.8criticalwindows 10 1607Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over a netwo99d ago
CVE-2026-261429.8criticalnuance powerscribe 360Deserialization of untrusted data in Nuance PowerScribe allows an unauthorized attacker to execute code over a net134d ago
CVE-2026-550109.8criticalminecraft bedrock dedicated serverHeap-based buffer overflow in Minecraft Bedrock Dedicated Server allows an unauthorized attacker to execute code o99d ago
CVE-2026-559449.8criticaldynamics navDeserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a99d ago
CVE-2026-561889.8criticalwindows 10 1607Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Server Netw99d ago
CVE-2026-628939.8criticalwindows 10 1607Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.71d ago
CVE-2026-321919.8criticalbing imagesImproper neutralization of special elements used in an os command ('os command injection') in Microsoft Bing Image216d ago
CVE-2026-321949.8criticalbing imagesImproper neutralization of special elements used in a command ('command injection') in Microsoft Bing Images allow216d ago
CVE-2026-58644exploited9.8criticalsharepoint serverDeserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code o99d ago
CVE-2026-410899.8criticalwindows server 2012Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.162d ago
CVE-2026-448159.8criticalwindows 10 1607Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network.134d ago
CVE-2026-561909.8criticalwindows 10 1607Use of uninitialized resource in Windows RDP allows an unauthorized attacker to execute code over a network.99d ago
CVE-2026-657919.8criticalwindows 10 1607Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a 71d ago
CVE-2026-561659.8criticalaccountHeap-based buffer overflow in Microsoft Account allows an unauthorized attacker to execute code over a network.90d ago
CVE-2026-703329.6criticalsharepoint onlineImproper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoin76d ago
CVE-2026-472819.6criticalvisual studio codeMissing authorization in Visual Studio Code allows an unauthorized attacker to elevate privileges over a network.134d ago
CVE-2026-628969.6criticalteamsImproper authentication in Microsoft Teams allows an authorized attacker to elevate privileges over a network.76d ago
CVE-2026-561619.6criticalazure logic appsImproper access control in Azure Logic Apps allows an authorized attacker to disclose information over a network.76d ago
CVE-2026-429049.6criticalwindows 10 21h2Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacen134d ago
CVE-2026-550089.6criticalexchange serverImproper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server 99d ago
CVE-2026-416159.6criticalauthenticatorExposure of sensitive information to an unauthorized actor in Microsoft Authenticator allows an unauthorized attac160d ago
CVE-2026-485619.6critical365 copilotImproper neutralization of special elements used in a command ('command injection') in Copilot Chat (Microsoft Edg99d ago
CVE-2026-694009.6criticalazure logic appsImproper limitation of a pathname to a restricted directory ('path traversal') in Azure Logic Apps allows an unaut62d ago
CVE-2026-503809.6criticalwindows 10 1607Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network.99d ago
CVE-2026-485829.6criticalexchange onlineMissing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a netw124d ago
CVE-2026-505169.4criticalazure kubernetes serviceMissing authentication for critical function in Microsoft Azure Kubernetes Service allows an unauthorized attacker71d ago
CVE-2026-628359.3criticalazure portalImproper authorization in Azure Portal allows an unauthorized attacker to disclose information over a network.89d ago
CVE-2026-591189.3criticalpower appsImproper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.76d ago
CVE-2026-497989.3criticalwindows 10 1607Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally.99d ago
CVE-2026-410909.3critical365 copilotImproper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an152d ago
CVE-2026-404029.3criticalwindows 11 23h2Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.162d ago
CVE-2026-411069.3critical365 copilotUrl redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate pri111d ago
CVE-2026-703069.3criticalsharepoint serverImproper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoin71d ago
CVE-2026-403799.3criticalentra idExposure of sensitive information to an unauthorized actor in Azure Entra ID allows an unauthorized attacker to pe162d ago
CVE-2026-476469.3criticaldynamics 365 customer voiceImproper neutralization of input during web page generation ('cross-site scripting') in Dynamics 365 Customer Voic105d ago
CVE-2026-628349.3criticalazure data factoryImproper verification of cryptographic signature in Azure Data Factory allows an unauthorized attacker to elevate 62d ago
CVE-2026-688239.1criticalazure confidential ledgerExposed dangerous method or function in Azure Confidential Ledger allows an authorized attacker to execute code ov76d ago
CVE-2026-411039.1criticalconfluence saml ssoIncorrect implementation of authentication algorithm in Microsoft SSO Plugin for Jira & Confluence allows an u162d ago
CVE-2026-428339.1criticaldynamics 365Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an author162d ago

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Our coverage of Microsoft

vulnerability

Microsoft, Adobe, Apple, and Foxit vulnerabilities

Cisco Talos's Vulnerability Discovery & Research team has recently disclosed a series of vulnerabilities affecting products from Microsoft, Adobe, Apple, and Foxit. All identified vulnerabilities have reportedly been patched by their respective vendors, aligning with Cisco's responsible disclosure policies. The issues range from privilege escalation and information disclosure to remote code…

security

Microsoft extends the Outlook naughty step with two more file types

Microsoft is implementing new security measures for Outlook, adding two file types, .msix and .msixbundle, to its default block list for attachments. These file types are associated with Windows application packages and bundles. The change is set to affect users of the New Outlook for Windows client and Outlook on the Web within Exchange Online.

CVE-2026-88771critical

Week in review: Researcher breaks into Microsoft analytics service, NetScaler RCE 0-day exploited

A 16-year-old security researcher has identified a vulnerability in Microsoft's internal analytics service, Titan, which could have exposed employee records and Bing search analytics. The flaw reportedly provided access to 17 trillion rows of data. Microsoft has not yet issued a public statement confirming the details of the vulnerability or its remediation.

cyber espionagehigh

China-Aligned TA419 Targets U.S. AI Policy Experts With Microsoft AitM Phishing

A China-aligned cyber espionage group, designated TA419, has reportedly been observed targeting U.S. AI policy experts through sophisticated phishing campaigns. These operations are characterized by the impersonation of prominent individuals and the deployment of a technique known as Frameless Browser-in-the-Browser (BitB) to construct highly convincing fake Microsoft login pages. The primary…

backdoorhigh

Antino Backdoor Lets China-Linked UAT-11587 Turn Microsoft 365 Into a C2 Channel

Cisco Talos researchers have identified a new Rust-based backdoor, dubbed Antino, which a China-linked threat actor known as UAT-11587 is using to conduct espionage against government and policy organizations in Asia. The backdoor uniquely leverages Microsoft 365 services, specifically Outlook and OneDrive, for its command-and-control (C2) communications, allowing its traffic to blend in with…

aihigh

Microsoft: AI Cuts Post-Compromise Attack Time to Minutes

Microsoft's Digital Defense Report 2026, released October 1, 2026, warns that artificial intelligence (AI) has dramatically accelerated portions of the cyber-attack lifecycle, compressing post-compromise activities from days to mere minutes. This rapid evolution, driven by threat actors' early adoption of AI, presents a significant challenge for cybersecurity defenders.

vulnerability

16-year-old researcher found a Microsoft bug, got admin access to databases with 17.3 trillion rows

A 16-year-old security researcher, known as Faav, discovered an authentication flaw in Microsoft's internal analytics service, Titan, which granted him administrator access and the ability to execute unauthorized SQL queries. This vulnerability potentially exposed analytics databases containing an estimated 17.3 trillion rows of data. Microsoft has since addressed the issue and awarded Faav a…

windows

Windows 11 2026 Update released, here's everything you need to know

Microsoft has commenced the rollout of the Windows 11 2026 Update, designated as version 26H2, to all users. This annual feature update is not expected to introduce a significant number of new features for most users, as many enhancements have already been delivered through monthly Windows Updates for those running recent versions.

vulnerability

Microsoft Patches 18 Vulnerabilities in AI, Cloud Products

Microsoft has reportedly addressed 18 vulnerabilities spanning its Azure and AI-branded product lines. The majority of these patched flaws were identified as privilege escalation vulnerabilities, indicating a focus on issues that could allow an attacker to gain elevated access within affected systems.

ai

Microsoft Commits to Sweeping AI Privacy Rules for Students. Will Other Tech Giants Follow?

Microsoft has reportedly committed to implementing new, comprehensive privacy rules and guardrails for its artificial intelligence tools when used in educational settings. This agreement was reached following negotiations with the American Federation of Teachers, signaling a potentially significant shift in how AI technologies are managed within the academic sphere.

patch

Microsoft releases emergency Windows updates to fix RDS failures

Microsoft has released emergency out-of-band updates for various Windows versions to address critical issues, including Remote Desktop Services (RDS) failures, Hyper-V problems, and USB audio malfunctions. These issues were introduced by the security updates deployed earlier in September 2026.

phishing

Attackers Use Passkey Phishing to Hijack Microsoft Cloud Accounts and Exfiltrate Data

Microsoft has reported details concerning two distinct campaigns where threat actors leveraged third-party email delivery infrastructure to distribute financial fraud scam messages. These campaigns employed passkey-themed social engineering tactics to compromise cloud environments, ultimately leading to the hijacking of Microsoft cloud accounts and subsequent data exfiltration.