patch tuesday

Microsoft disclosed CVE-2026-32175, a .NET Core tampering vulnerability, in its Security Update Guide on May 12, 2026, as part of the May Patch Tuesday cycle, identifying the issue as a confirmed flaw in Microsoft’s cross-platform application runtime rather than a speculative third-party report...

Microsoft has listed CVE-2026-42831 as a Microsoft Office remote code execution vulnerability in the Security Update Guide, and the most important public signal on May 12, 2026, is not exploit drama but Microsoft’s confidence that the flaw exists and has enough technical shape to warrant action...

Microsoft disclosed CVE-2026-32170, a Windows Rich Text Edit Control elevation-of-privilege vulnerability, in its May 12, 2026 Security Update Guide as part of the monthly Patch Tuesday release affecting Windows systems that include the Rich Edit component. The important word is not “rich,” and...

Microsoft’s May 12, 2026 Security Update Guide entry identifies CVE-2026-41610 as a Visual Studio Code security feature bypass vulnerability, placing Microsoft’s developer editor back in the patch-management spotlight on Patch Tuesday. The public framing matters because this is not a...

On May 12, 2026, Microsoft released KB5089549 for Windows 11 versions 25H2 and 24H2, raising them to builds 26200.8457 and 26100.8457, while KB5089548 updates Windows 11 version 26H1 to build 28000.2113. The notable part is not that Patch Tuesday arrived; it always does. The notable part is that...

Microsoft disclosed CVE-2026-40415, a Windows TCP/IP remote code execution vulnerability, in its Security Update Guide on May 12, 2026, framing the issue as a network-stack flaw whose risk depends not only on severity but on how confidently defenders can trust the available technical details...

Microsoft disclosed CVE-2026-40408 on May 12, 2026, as an Important-rated Windows WAN ARP Driver elevation-of-privilege vulnerability that affects supported Windows client and server releases and allows a locally authenticated attacker to gain SYSTEM privileges after exploiting a use-after-free...

Microsoft disclosed CVE-2026-40405 on May 12, 2026, as an Important-rated Windows TCP/IP denial-of-service vulnerability caused by a null pointer dereference that lets an unauthenticated attacker deny service over the network on affected Windows 11 and Windows Server 2025 systems. The...

Microsoft published CVE-2026-40399 on May 12, 2026, as an Important-rated Windows TCP/IP elevation-of-privilege vulnerability caused by a stack-based buffer overflow that lets a locally authorized attacker gain SYSTEM privileges after applying pressure to the vulnerable component. The phrase...

Microsoft disclosed CVE-2026-40380 on May 12, 2026, as a Windows Volume Manager Extension Driver remote code execution vulnerability in the Microsoft Security Update Guide, placing a storage-adjacent kernel component into the monthly patching spotlight. The public entry is thin on exploit...

CVE-2026-40360 is a Microsoft Excel information disclosure vulnerability published in Microsoft’s Security Update Guide on May 12, 2026, affecting Excel users who process untrusted workbooks and requiring administrators to evaluate Office updates through the same Patch Tuesday machinery used for...

Microsoft has listed CVE-2026-35433 as a .NET elevation-of-privilege vulnerability in the Security Update Guide as of May 2026, with the public advisory offering the vulnerability title and scoring context but little technical detail about the underlying flaw. That thin disclosure is not unusual...

Microsoft disclosed CVE-2026-35424 on May 12, 2026, as a Windows Internet Key Exchange protocol denial-of-service vulnerability, affecting systems that expose IKE/IPsec negotiation paths used by VPNs, secure tunnels, and policy-driven encrypted network communications. The advisory does not make...

Microsoft’s Security Response Center has listed CVE-2026-35420 as a Windows Kernel elevation-of-privilege vulnerability, published in the May 2026 security update cycle, with vendor acknowledgement establishing that the flaw exists even though public technical detail remains deliberately...

Microsoft published CVE-2026-34351 on May 12, 2026, describing an Important-rated Windows TCP/IP elevation-of-privilege flaw caused by a race condition that can let an authenticated local attacker gain SYSTEM privileges after applying the right exploit path. The vulnerability is not described as...

Microsoft disclosed CVE-2026-34329 on May 12, 2026, as an Important-rated remote code execution flaw in Microsoft Message Queuing that stems from a heap-based buffer overflow and can be triggered by an unauthenticated attacker on an adjacent network. The advisory is not a panic button, but it is...

Microsoft published KB5087594 on May 12, 2026 as a Safe OS Dynamic Update for Windows 11 version 23H2, tying another servicing package to the larger Secure Boot certificate rollover that begins affecting Windows devices in June 2026. The update itself is not a flashy feature release; it is...

Microsoft released KB5089548 for Windows 11 version 26H1 on May 12, 2026, moving the operating system to build 28000.2113 with security fixes, servicing-stack changes, AI component updates for Copilot+ PCs, and a small set of reliability improvements. The update is not dramatic in the...

Microsoft published CVE-2026-33841 on May 12, 2026, as an Important Windows Kernel elevation-of-privilege vulnerability caused by a heap-based buffer overflow that lets an authorized local attacker raise privileges on affected Windows client and server systems. The bug is not described as...

Microsoft listed CVE-2026-32177 as a .NET elevation-of-privilege vulnerability in its April 14, 2026 Security Update Guide, affecting supported .NET and Visual Studio servicing channels and carrying a vendor-confirmed vulnerability record rather than a rumor-driven advisory. That last point...