Microsoft Patch Tuesday · January 2025

    MicrosoftScheduled

    178

    Total

    Deduplicated CVEs in this cycle. For Microsoft, only CVEs first published on Patch Tuesday itself count, excluding browser updates, late additions and cloud fixes.

    3

    Critical

    CVEs with CVSS 9.0 or higher (critical per NVD scale).

    3

    Zero-day

    Actively exploited at time of disclosure (CISA KEV or vendor-confirmed).

    3

    KEV

    Listed in CISA's Known Exploited Vulnerabilities catalog: mandatory for US agencies, best practice for everyone.

    3 zero-days / actively exploited

    These vulnerabilities were exploited before or at the time the patch was released. Install the related updates first.

    3 zero-days / actively exploited
    HighCVE-2025-21333

    Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

    Listed in CISA KEV

    KB50499817.8
    HighCVE-2025-21334

    Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

    Listed in CISA KEV

    KB50499817.8
    HighCVE-2025-21335

    Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

    Listed in CISA KEV

    KB50499817.8

    By product family

    Unassigned146 CVEs
    Unassigned
    CriticalCVE-2025-21298

    Windows OLE Remote Code Execution Vulnerability

    KB50500089.8
    CriticalCVE-2025-21307

    Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability

    KB50500089.8
    CriticalCVE-2025-21311

    Windows NTLM V1 Elevation of Privilege Vulnerability

    KB50500099.8
    HighCVE-2025-21178

    Visual Studio Remote Code Execution Vulnerability

    KB50496888.8
    HighCVE-2025-21223

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21233

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21236

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21237

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21238

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21239

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21240

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21241

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21243

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21244

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21245

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21246

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21248

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21250

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21252

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21266

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21273

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21282

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21286

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21291

    Windows Direct Show Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21292

    Windows Search Service Elevation of Privilege Vulnerability

    KB50500088.8
    HighCVE-2025-21293

    Active Directory Domain Services Elevation of Privilege Vulnerability

    KB50500088.8
    HighCVE-2025-21302

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21303

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21305

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21306

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21339

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21385

    A Server-Side Request Forgery (SSRF) vulnerability in Microsoft Purview allows an authorized attacker to disclose information over a network.

    —8.8
    HighCVE-2025-21409

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21411

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21413

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21417

    Windows Telephony Service Remote Code Execution Vulnerability

    KB50500088.8
    HighCVE-2025-21354

    Microsoft Excel Remote Code Execution Vulnerability

    KB50026778.4
    HighCVE-2025-21362

    Microsoft Excel Remote Code Execution Vulnerability

    KB50026778.4
    HighCVE-2025-21224

    Windows Line Printer Daemon (LPD) Service Remote Code Execution Vulnerability

    KB50499838.1
    HighCVE-2025-21294

    Microsoft Digest Authentication Remote Code Execution Vulnerability

    KB50500088.1
    HighCVE-2025-21295

    SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerability

    KB50500088.1
    HighCVE-2025-21297

    Windows Remote Desktop Services Remote Code Execution Vulnerability

    KB50500088.1
    HighCVE-2025-21309

    Windows Remote Desktop Services Remote Code Execution Vulnerability

    KB50500088.1
    HighCVE-2025-21186

    Microsoft Access Remote Code Execution Vulnerability

    Publicly disclosed

    KB50026707.8
    HighCVE-2025-21187

    Microsoft Power Automate Remote Code Execution Vulnerability

    —7.8
    HighCVE-2025-21234

    Windows PrintWorkflowUserSvc Elevation of Privilege Vulnerability

    KB50499837.8
    HighCVE-2025-21235

    Windows PrintWorkflowUserSvc Elevation of Privilege Vulnerability

    KB50499837.8
    HighCVE-2025-21271

    Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability

    KB50500087.8
    HighCVE-2025-21275

    Windows App Package Installer Elevation of Privilege Vulnerability

    Publicly disclosed

    KB50499837.8
    HighCVE-2025-21281

    Microsoft COM for Windows Elevation of Privilege Vulnerability

    KB50500087.8
    HighCVE-2025-21287

    Windows Installer Elevation of Privilege Vulnerability

    KB50500087.8
    HighCVE-2025-21304

    Microsoft DWM Core Library Elevation of Privilege Vulnerability

    KB50500087.8
    HighCVE-2025-21315

    Microsoft Brokering File System Elevation of Privilege Vulnerability

    KB50500097.8
    HighCVE-2025-21325

    Windows Secure Kernel Mode Elevation of Privilege Vulnerability

    KB50499817.8
    HighCVE-2025-21326

    Internet Explorer Remote Code Execution Vulnerability

    KB50500097.8
    HighCVE-2025-21338

    GDI+ Remote Code Execution Vulnerability

    KB50500087.8
    HighCVE-2025-21360

    Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability

    —7.8
    HighCVE-2025-21361

    Microsoft Outlook Remote Code Execution Vulnerability

    —7.8
    HighCVE-2025-21363

    Microsoft Word Remote Code Execution Vulnerability

    —7.8
    HighCVE-2025-21364

    Microsoft Excel Security Feature Bypass Vulnerability

    —7.8
    HighCVE-2025-21366

    Microsoft Access Remote Code Execution Vulnerability

    Publicly disclosed

    KB50026707.8
    HighCVE-2025-21370

    Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

    KB50500217.8
    HighCVE-2025-21372

    Microsoft Brokering File System Elevation of Privilege Vulnerability

    KB50500097.8
    HighCVE-2025-21378

    Windows CSC Service Elevation of Privilege Vulnerability

    KB50500087.8
    HighCVE-2025-21382

    Windows Graphics Component Elevation of Privilege Vulnerability

    KB50500087.8
    HighCVE-2025-21395

    Microsoft Access Remote Code Execution Vulnerability

    Publicly disclosed

    KB50026887.8
    HighCVE-2025-21207

    Windows Connected Devices Platform Service (Cdpsvc) Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21218

    Windows Kerberos Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21220

    Microsoft Message Queuing Information Disclosure Vulnerability

    KB50500087.5
    HighCVE-2025-21230

    Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21231

    IP Helper Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21251

    Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21270

    Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21276

    Windows MapUrlToZone Denial of Service Vulnerability

    KB50500097.5
    HighCVE-2025-21277

    Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21285

    Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21289

    Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21290

    Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21296

    BranchCache Remote Code Execution Vulnerability

    KB50500087.5
    HighCVE-2025-21300

    Windows Universal Plug and Play (UPnP) Device Host Denial of Service Vulnerability

    KB50500087.5
    HighCVE-2025-21330

    Windows Remote Desktop Services Denial of Service Vulnerability

    KB50950517.5
    HighCVE-2025-21343

    Windows Web Threat Defense User Service Information Disclosure Vulnerability

    KB50500217.5
    HighCVE-2025-21389

    Uncontrolled resource consumption in Windows Universal Plug and Play (UPnP) Device Host allows an unauthorized attacker to deny service over a network.

    KB50500087.5
    HighCVE-2024-50338

    Git Credential Manager (GCM) is a secure Git credential helper built on .NET that runs on Windows, macOS, and Linux.

    —7.4
    HighCVE-2025-21331

    Windows Installer Elevation of Privilege Vulnerability

    KB50500087.3
    HighCVE-2025-21405

    Visual Studio Elevation of Privilege Vulnerability

    —7.3
    HighCVE-2025-21299

    Windows Kerberos Security Feature Bypass Vulnerability

    KB50500087.1
    MediumCVE-2025-21211

    Secure Boot Security Feature Bypass Vulnerability

    KB50500086.8
    HighCVE-2024-7344

    Howyar UEFI Application "Reloader" (32-bit and 64-bit) is vulnerable to execution of unsigned software in a hardcoded path.

    KB50500088.2
    MediumCVE-2025-21357

    Microsoft Outlook Remote Code Execution Vulnerability

    KB50026566.7
    MediumCVE-2025-21226

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21227

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21228

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21229

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21232

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21249

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21255

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21256

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21258

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21260

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21261

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21263

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21265

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21310

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21324

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21327

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21341

    Windows Digital Media Elevation of Privilege Vulnerability

    KB50500086.6
    MediumCVE-2025-21193

    Active Directory Federation Server Spoofing Vulnerability

    KB50500086.5
    MediumCVE-2025-21217

    Windows NTLM Spoofing Vulnerability

    KB50500086.5
    MediumCVE-2025-21272

    Windows COM Server Information Disclosure Vulnerability

    KB50500086.5
    MediumCVE-2025-21288

    Windows COM Server Information Disclosure Vulnerability

    KB50500086.5
    MediumCVE-2025-21301

    Windows Geolocation Service Information Disclosure Vulnerability

    KB50500086.5
    MediumCVE-2025-21308

    Windows Themes Spoofing Vulnerability

    Publicly disclosed

    KB50500086.5
    MediumCVE-2025-21313

    Windows Security Account Manager (SAM) Denial of Service Vulnerability

    KB50500096.5
    MediumCVE-2025-21314

    Windows SmartScreen Spoofing Vulnerability

    KB50500096.5
    MediumCVE-2025-21403

    On-Premises Data Gateway Information Disclosure Vulnerability

    —6.4
    MediumCVE-2025-21278

    Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability

    KB50500086.2
    MediumCVE-2025-21202

    Windows Recovery Environment Agent Elevation of Privilege Vulnerability

    KB50500086.1
    MediumCVE-2025-21225

    Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability

    KB50500085.9
    MediumCVE-2025-21242

    Windows Kerberos Information Disclosure Vulnerability

    KB50500085.9
    MediumCVE-2025-21336

    Windows Cryptographic Information Disclosure Vulnerability

    KB50500085.6
    MediumCVE-2025-21257

    Windows WLAN AutoConfig Service Information Disclosure Vulnerability

    KB50500085.5
    MediumCVE-2025-21274

    Windows Event Tracing Denial of Service Vulnerability

    KB50500085.5
    MediumCVE-2025-21280

    Windows Virtual Trusted Platform Module Denial of Service Vulnerability

    KB50500085.5
    MediumCVE-2025-21284

    Windows Virtual Trusted Platform Module Denial of Service Vulnerability

    KB50500085.5
    MediumCVE-2025-21316

    Windows Kernel Memory Information Disclosure Vulnerability

    KB50500085.5
    MediumCVE-2025-21317

    Windows Kernel Memory Information Disclosure Vulnerability

    KB50499835.5
    MediumCVE-2025-21318

    Windows Kernel Memory Information Disclosure Vulnerability

    KB50500085.5
    MediumCVE-2025-21319

    Windows Kernel Memory Information Disclosure Vulnerability

    KB50500085.5
    MediumCVE-2025-21320

    Windows Kernel Memory Information Disclosure Vulnerability

    KB50500085.5
    MediumCVE-2025-21321

    Windows Kernel Memory Information Disclosure Vulnerability

    KB50500095.5
    MediumCVE-2025-21323

    Windows Kernel Memory Information Disclosure Vulnerability

    KB50499835.5
    MediumCVE-2025-21340

    Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability

    KB50500085.5
    MediumCVE-2025-21374

    Windows CSC Service Information Disclosure Vulnerability

    KB50500085.5
    MediumCVE-2025-21213

    Secure Boot Security Feature Bypass Vulnerability

    KB50500084.6
    MediumCVE-2025-21215

    Secure Boot Security Feature Bypass Vulnerability

    KB50500084.6
    MediumCVE-2025-21189

    MapUrlToZone Security Feature Bypass Vulnerability

    KB50500084.3
    MediumCVE-2025-21219

    MapUrlToZone Security Feature Bypass Vulnerability

    KB50500084.3
    MediumCVE-2025-21268

    MapUrlToZone Security Feature Bypass Vulnerability

    KB50500094.3
    MediumCVE-2025-21269

    Windows HTML Platforms Security Feature Bypass Vulnerability

    KB50500084.3
    MediumCVE-2025-21328

    MapUrlToZone Security Feature Bypass Vulnerability

    KB50500084.3
    MediumCVE-2025-21329

    MapUrlToZone Security Feature Bypass Vulnerability

    KB50500094.3
    MediumCVE-2025-21332

    MapUrlToZone Security Feature Bypass Vulnerability

    KB50500094.3
    MediumCVE-2025-21210

    Windows BitLocker Information Disclosure Vulnerability

    KB50500084.2
    MediumCVE-2025-21214

    Windows BitLocker Information Disclosure Vulnerability

    KB50500084.2
    LowCVE-2025-21312

    Windows Smart Card Reader Information Disclosure Vulnerability

    KB50500082.4
    Chromium14 CVEs
    Chromium
    HighCVE-2025-0291

    Type Confusion in V8 in Google Chrome prior to 131.0.6778.264 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

    —8.8
    HighCVE-2025-0434

    Out of bounds memory access in V8 in Google Chrome prior to 132.0.6834.83 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

    —8.8
    HighCVE-2025-0436

    Integer overflow in Skia in Google Chrome prior to 132.0.6834.83 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

    —8.8
    HighCVE-2025-0437

    Out of bounds read in Metrics in Google Chrome prior to 132.0.6834.83 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

    —8.8
    HighCVE-2025-0438

    Stack buffer overflow in Tracing in Google Chrome prior to 132.0.6834.83 allowed a remote attacker to potentially exploit stack corruption via a crafted HTML page.

    —8.8
    HighCVE-2025-0443

    Insufficient data validation in Extensions in Google Chrome prior to 132.0.6834.83 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform privilege escalation via a crafted HTML page.

    —8.8
    HighCVE-2025-0447

    Inappropriate implementation in Navigation in Google Chrome prior to 132.0.6834.83 allowed a remote attacker to perform privilege escalation via a crafted HTML page.

    —8.8
    MediumCVE-2025-0435

    Inappropriate implementation in Navigation in Google Chrome on Android prior to 132.0.6834.83 allowed a remote attacker to perform UI spoofing via a crafted HTML page.

    —6.5
    MediumCVE-2025-0439

    Race in Frames in Google Chrome prior to 132.0.6834.83 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform UI spoofing via a crafted HTML page.

    —6.5
    MediumCVE-2025-0440

    Inappropriate implementation in Fullscreen in Google Chrome on Windows prior to 132.0.6834.83 allowed a remote attacker to perform UI spoofing via a crafted HTML page.

    —6.5
    MediumCVE-2025-0441

    Inappropriate implementation in Fenced Frames in Google Chrome prior to 132.0.6834.83 allowed a remote attacker to obtain potentially sensitive information from the system via a crafted HTML page.

    —6.5
    MediumCVE-2025-0442

    Inappropriate implementation in Payments in Google Chrome prior to 132.0.6834.83 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform UI spoofing via a crafted HTML page.

    —6.5
    MediumCVE-2025-0446

    Inappropriate implementation in Extensions in Google Chrome prior to 132.0.6834.83 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform UI spoofing via a crafted Chrome Extension.

    —4.3
    MediumCVE-2025-0448

    Inappropriate implementation in Compositing in Google Chrome prior to 132.0.6834.83 allowed a remote attacker to perform UI spoofing via a crafted HTML page.

    —4.3
    Office5 CVEs
    Office
    HighCVE-2025-21345

    Microsoft Office Visio Remote Code Execution Vulnerability

    —7.8
    HighCVE-2025-21356

    Microsoft Office Visio Remote Code Execution Vulnerability

    —7.8
    HighCVE-2025-21365

    Microsoft Office Remote Code Execution Vulnerability

    —7.8
    HighCVE-2025-21402

    Microsoft Office OneNote Remote Code Execution Vulnerability

    —7.8
    HighCVE-2025-21346

    Microsoft Office Security Feature Bypass Vulnerability

    KB50026757.1
    .NET4 CVEs
    .NET
    HighCVE-2025-21176

    .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability

    KB50496888.8
    HighCVE-2025-21171

    .NET Remote Code Execution Vulnerability

    KB50505267.5
    HighCVE-2025-21172

    .NET and Visual Studio Remote Code Execution Vulnerability

    KB50496887.5
    HighCVE-2025-21173

    .NET Elevation of Privilege Vulnerability

    KB50505257.3
    SharePoint3 CVEs
    SharePoint
    HighCVE-2025-21344

    Microsoft SharePoint Server Remote Code Execution Vulnerability

    KB50026727.8
    HighCVE-2025-21348

    Microsoft SharePoint Server Remote Code Execution Vulnerability

    KB50026727.2
    MediumCVE-2025-21393

    Microsoft SharePoint Server Spoofing Vulnerability

    KB50026726.3
    Edge2 CVEs
    Edge
    HighCVE-2025-21399

    Microsoft Edge (Chromium-based) Update Elevation of Privilege Vulnerability

    —7.4
    MediumCVE-2025-21185

    Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

    —6.5
    Azure1 CVE
    Azure
    HighCVE-2025-21380

    Improper access control in Azure SaaS Resources allows an authorized attacker to disclose information over a network.

    —8.8