Cyber Security News

Microsoft Patch Tuesday October 2025 – 172 Vulnerabilities Fixed Along with 4 Zero-days

In its October 2025 Patch Tuesday release, Microsoft addressed a staggering 172 security vulnerabilities across its vast ecosystem, with four zero-day flaws stealing the spotlight, two of which are already being exploited in the wild.

This massive security update targets a wide range of products, from Windows operating systems and Microsoft Office to Azure cloud services, highlighting the relentless pace of cyberthreats as organizations race to secure their systems.

VulnerabilitiesNo’s
Elevation of Privilege80
Remote Code Execution31
Information Disclosure28
Security Feature Bypass11
Denial of Service11
Spoofing10
Tampering1
Total172

Critical Flaws and Zero-Day Exploits

Among the most pressing issues are two actively exploited zero-day vulnerabilities. CVE-2025-2884, an out-of-bounds read flaw in the TCG TPM2.0 reference implementation, stems from weak validation in cryptographic signing functions, exposing systems to information disclosure risks.

This vulnerability, publicly disclosed via CERT/CC, impacts trusted platform modules critical to secure boot processes.

The second, CVE-2025-47827, allows attackers to bypass Secure Boot in IGEL OS versions prior to 11 by exploiting improper signature verification, enabling malicious root filesystems to mount unverified images, a potential pathway for persistent malware.

Two other zero-days, CVE-2025-59234 and CVE-2025-59236, are use-after-free vulnerabilities in Microsoft Office and Excel, respectively.

Rated critical with CVSS scores of approximately 7.8, these flaws enable remote code execution (RCE) when users open malicious files, requiring no authentication.

Attackers could leverage these to gain full system control, paving the way for data theft or ransomware attacks.

Microsoft also patched CVE-2025-59230, a flaw in the Windows Remote Access Connection Manager that allows local privilege escalation due to improper access controls, which is also actively exploited.

The October update addresses a diverse set of vulnerabilities, including 11 critical RCE and elevation of privilege (EoP) issues, many tied to memory safety errors like use-after-free and buffer overflows in legacy codebases. The breakdown includes:

Vulnerabilities Details:

Elevation of Privilege: 80 vulnerabilities, the most prevalent category, including CVE-2025-49708 in the Microsoft Graphics Component, which enables privilege escalation over networks via memory corruption.

Remote Code Execution: 31 flaws, such as CVE-2025-59287 in Windows Server Update Service, which permits unauthenticated RCE over networks, posing a significant risk for supply-chain attacks.

Information Disclosure: 28 issues, including kernel memory leaks in vulnerabilities like CVE-2025-55693 and CVE-2025-59187.

Security Feature Bypass: 11 vulnerabilities, notably CVE-2025-55682 in BitLocker, which could allow physical attacks to bypass security measures.

Denial of Service: 11 flaws, such as CVE-2025-55698 in DirectX, which could disrupt services through null dereferences.

Spoofing: 10 issues, including CVE-2025-59239 in File Explorer and CVE-2025-59248 in Exchange Server, which could trick users into malicious actions.

Tampering: One vulnerability affecting Azure monitoring data.

Microsoft Patch Tuesday October 2025

CVE NumberCVE TitleImpactMax Severity
CVE-2025-59502Remote Procedure Call Denial of Service VulnerabilityDenial of ServiceModerate
CVE-2025-59497Microsoft Defender for Linux Denial of Service VulnerabilityDenial of ServiceImportant
CVE-2025-59494Azure Monitor Agent Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59489MITRE: CVE-2025-59489 Unity Gaming Engine Editor vulnerabilityElevation of PrivilegeImportant
CVE-2025-59295Windows URL Parsing Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59294Windows Taskbar Live Preview Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59292Azure Compute Gallery Elevation of Privilege VulnerabilityElevation of PrivilegeCritical
CVE-2025-59291Confidential Azure Container Instances Elevation of Privilege VulnerabilityElevation of PrivilegeCritical
CVE-2025-59290Windows Bluetooth Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59289Windows Bluetooth Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59288Playwright Spoofing VulnerabilitySpoofingModerate
CVE-2025-59287Windows Server Update Service (WSUS) Remote Code Execution VulnerabilityRemote Code ExecutionCritical
CVE-2025-59286Copilot Spoofing VulnerabilitySpoofingCritical
CVE-2025-59285Azure Monitor Agent Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59284Windows NTLM Spoofing VulnerabilitySpoofingImportant
CVE-2025-59282Internet Information Services (IIS) Inbox COM Objects (Global Memory) Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59281Xbox Gaming Services Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59280Windows SMB Client Tampering VulnerabilityTamperingImportant
CVE-2025-59278Windows Authentication Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59277Windows Authentication Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59275Windows Authentication Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59272Copilot Spoofing VulnerabilitySpoofingCritical
CVE-2025-59271Redis Enterprise Elevation of Privilege VulnerabilityElevation of PrivilegeCritical
CVE-2025-59261Windows Graphics Component Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59260Microsoft Failover Cluster Virtual Driver Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59259Windows Local Session Manager (LSM) Denial of Service VulnerabilityDenial of ServiceImportant
CVE-2025-59258Windows Active Directory Federation Services (ADFS) Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59257Windows Local Session Manager (LSM) Denial of Service VulnerabilityDenial of ServiceImportant
CVE-2025-59255Windows DWM Core Library Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59254Microsoft DWM Core Library Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59253Windows Search Service Denial of Service VulnerabilityDenial of ServiceImportant
CVE-2025-59252M365 Copilot Spoofing VulnerabilitySpoofingCritical
CVE-2025-59250JDBC Driver for SQL Server Spoofing VulnerabilitySpoofingImportant
CVE-2025-59249Microsoft Exchange Server Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59248Microsoft Exchange Server Spoofing VulnerabilitySpoofingImportant
CVE-2025-59247Azure PlayFab Elevation of Privilege VulnerabilityElevation of PrivilegeCritical
CVE-2025-59246Azure Entra ID Elevation of Privilege VulnerabilityElevation of PrivilegeCritical
CVE-2025-59244NTLM Hash Disclosure Spoofing VulnerabilitySpoofingImportant
CVE-2025-59243Microsoft Excel Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59242Windows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59241Windows Health and Optimized Experiences Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59238Microsoft PowerPoint Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59237Microsoft SharePoint Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59236Microsoft Excel Remote Code Execution VulnerabilityRemote Code ExecutionCritical
CVE-2025-59235Microsoft Excel Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59234Microsoft Office Remote Code Execution VulnerabilityRemote Code ExecutionCritical
CVE-2025-59233Microsoft Excel Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59232Microsoft Excel Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59231Microsoft Excel Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59230Windows Remote Access Connection Manager Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59229Microsoft Office Denial of Service VulnerabilityDenial of ServiceImportant
CVE-2025-59228Microsoft SharePoint Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59227Microsoft Office Remote Code Execution VulnerabilityRemote Code ExecutionCritical
CVE-2025-59226Microsoft Office Visio Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59225Microsoft Excel Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59224Microsoft Excel Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59223Microsoft Excel Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59222Microsoft Word Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59221Microsoft Word Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-59220Windows Bluetooth Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59218Azure Entra ID Elevation of Privilege VulnerabilityElevation of PrivilegeCritical
CVE-2025-59214Microsoft Windows File Explorer Spoofing VulnerabilitySpoofingImportant
CVE-2025-59213Configuration Manager Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59211Windows Push Notification Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59210Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59209Windows Push Notification Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59208Windows MapUrlToZone Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59207Windows Kernel Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59206Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59205Windows Graphics Component Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59204Windows Management Services Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59203Windows State Repository API Server File Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59202Windows Remote Desktop Services Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59201Network Connection Status Indicator (NCSI) Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59200Data Sharing Service Spoofing VulnerabilitySpoofingImportant
CVE-2025-59199Software Protection Platform (SPP) Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59198Windows Search Service Denial of Service VulnerabilityDenial of ServiceImportant
CVE-2025-59197Windows ETL Channel Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59196Windows Simple Search and Discovery Protocol (SSDP) Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59195Microsoft Graphics Component Denial of Service VulnerabilityDenial of ServiceImportant
CVE-2025-59194Windows Kernel Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59193Windows Management Services Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59192Storport.sys Driver Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59191Windows Connected Devices Platform Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59190Windows Search Service Denial of Service VulnerabilityDenial of ServiceImportant
CVE-2025-59189Microsoft Brokering File System Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59188Microsoft Failover Cluster Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59187Windows Kernel Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-59186Windows Kernel Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-59185NTLM Hash Disclosure Spoofing VulnerabilitySpoofingImportant
CVE-2025-59184Storage Spaces Direct Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-58739Microsoft Windows File Explorer Spoofing VulnerabilitySpoofingImportant
CVE-2025-58738Inbox COM Objects (Global Memory) Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-58737Remote Desktop Protocol Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-58736Inbox COM Objects (Global Memory) Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-58735Inbox COM Objects (Global Memory) Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-58734Inbox COM Objects (Global Memory) Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-58733Inbox COM Objects (Global Memory) Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-58732Inbox COM Objects (Global Memory) Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-58731Inbox COM Objects (Global Memory) Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-58730Inbox COM Objects (Global Memory) Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-58729Windows Local Session Manager (LSM) Denial of Service VulnerabilityDenial of ServiceImportant
CVE-2025-58728Windows Bluetooth Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-58727Windows Connected Devices Platform Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-58726Windows SMB Server Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-58725Windows COM+ Event System Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-58724Arc Enabled Servers – Azure Connected Machine Agent Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-58722Microsoft DWM Core Library Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-58720Windows Cryptographic Services Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-58719Windows Connected Devices Platform Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-58718Remote Desktop Client Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-58717Windows Routing and Remote Access Service (RRAS) Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-58716Windows Speech Runtime Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-58715Windows Speech Runtime Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-58714Windows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55701Windows Authentication Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55700Windows Routing and Remote Access Service (RRAS) Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-55699Windows Kernel Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-55698DirectX Graphics Kernel Denial of Service VulnerabilityDenial of ServiceImportant
CVE-2025-55697Azure Local Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55696NtQueryInformation Token function (ntifs.h) Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55695Windows WLAN AutoConfig Service Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-55694Windows Error Reporting Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55693Windows Kernel Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55692Windows Error Reporting Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55691Windows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55690Windows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55689Windows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55688Windows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55687Windows Resilient File System (ReFS) Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55686Windows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55685Windows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55684Windows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55683Windows Kernel Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-55682Windows BitLocker Security Feature Bypass VulnerabilitySecurity Feature BypassImportant
CVE-2025-55681Desktop Windows Manager Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55680Windows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55679Windows Kernel Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-55678DirectX Graphics Kernel Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55677Windows Device Association Broker Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55676Windows USB Video Class System Driver Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-55340Windows Remote Desktop Protocol Security Feature BypassSecurity Feature BypassImportant
CVE-2025-55339Windows Network Driver Interface Specification Driver Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55338Windows BitLocker Security Feature Bypass VulnerabilitySecurity Feature BypassImportant
CVE-2025-55337Windows BitLocker Security Feature Bypass VulnerabilitySecurity Feature BypassImportant
CVE-2025-55336Windows Cloud Files Mini Filter Driver Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-55335Windows NTFS Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55334Windows Kernel Security Feature Bypass VulnerabilitySecurity Feature BypassImportant
CVE-2025-55333Windows BitLocker Security Feature Bypass VulnerabilitySecurity Feature BypassImportant
CVE-2025-55332Windows BitLocker Security Feature Bypass VulnerabilitySecurity Feature BypassImportant
CVE-2025-55331Windows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55330Windows BitLocker Security Feature Bypass VulnerabilitySecurity Feature BypassImportant
CVE-2025-55328Windows Hyper-V Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55326Windows Connected Devices Platform Service (Cdpsvc) Remote Code Execution VulnerabilityRemote Code ExecutionImportant
CVE-2025-55325Windows Storage Management Provider Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-55321Azure Monitor Log Analytics Spoofing VulnerabilitySpoofingCritical
CVE-2025-55320Configuration Manager Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55315ASP.NET Security Feature Bypass VulnerabilitySecurity Feature BypassImportant
CVE-2025-55248.NET, .NET Framework, and Visual Studio Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-55247.NET Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-55240Visual Studio Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-54957MITRE CVE-2025-54957: Integer overflow in Dolby Digital Plus audio decoderRemote Code ExecutionImportant
CVE-2025-54132GitHub CVE-2025-54132: Arbitrary Image Fetch in Mermaid Diagram ToolInformation DisclosureImportant
CVE-2025-53782Microsoft Exchange Server Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-53768Xbox IStorageService Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-53717Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-53150Windows Digital Media Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-53139Windows Hello Security Feature Bypass VulnerabilitySecurity Feature BypassImportant
CVE-2025-50175Windows Digital Media Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-50174Windows Device Association Broker Service Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-50152Windows Kernel Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-49708Microsoft Graphics Component Elevation of Privilege VulnerabilityElevation of PrivilegeCritical
CVE-2025-48813Virtual Secure Mode Spoofing VulnerabilitySpoofingImportant
CVE-2025-48004Microsoft Brokering File System Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-47989Azure Connected Machine Agent Elevation of Privilege VulnerabilityElevation of PrivilegeImportant
CVE-2025-47979Microsoft Failover Cluster Information Disclosure VulnerabilityInformation DisclosureImportant
CVE-2025-47827MITRE CVE-2025-47827: Secure Boot bypass in IGEL OS before 11Security Feature BypassImportant
CVE-2025-2884Cert CC: CVE-2025-2884 Out-of-Bounds read vulnerability in TCG TPM2.0 reference implementationInformation DisclosureImportant
Balaji

BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

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