privilege escalation

A newly cataloged elevation‑of‑privilege issue affecting Windows Admin Center (WAC) — tracked under CVE‑2026‑26119 in Microsoft’s Security Update Guide — exposes a dangerous trust‑model failure in WAC’s management‑plane components that can let a local, low‑privilege user escalate to...

Millions of Windows 10 users are being urged to act now after security researchers and national incident response teams flagged a pair of escalating threats: a widespread fake browser update campaign delivering remote-access malware and an ongoing stream of high‑severity Windows vulnerabilities...

Siemens has released fixes for two high‑severity local privilege‑escalation flaws in its SINEC NMS family that allow a low‑privileged local user to modify configuration data in a way that forces the product to load attacker‑controlled DLLs — a classic uncontrolled search path (DLL hijack)...

Microsoft’s tracking entry for CVE-2026-21237 lists a new Windows Subsystem for Linux (WSL) elevation-of-privilege issue that every Windows administrator and security team should treat as a priority for triage—even if the public technical detail set is intentionally sparse at the moment...

Microsoft’s Security Update Guide records CVE‑2026‑21245 as a Windows kernel elevation‑of‑privilege issue — a classic local attack surface that can let a low‑privileged user or process gain SYSTEM rights — and the vendor’s terse advisory pairs the entry with its confidence/technical‑detail...

Microsoft has assigned CVE-2026-21522 to a newly disclosed elevation-of-privilege flaw affecting Azure Container Instances (ACI) Confidential Containers, warning that an attacker with access inside a confidential guest could potentially escalate privileges and interact with host-level resources...

Microsoft’s security database lists CVE-2026-21234 as an elevation‑of‑privilege issue tied to the Windows Connected Devices Platform Service (CDPSvc), and the entry highlights the vendor’s report confidence metric — a signal security teams must parse carefully when prioritizing remediation and...

Microsoft’s advisory entry for CVE‑2026‑24302 identifies an elevation‑of‑privilege weakness affecting Azure Arc / Azure Connected Machine (azcmagent) components, but public technical details remain intentionally sparse; defenders must therefore treat the advisory as urgent while mapping the CVE...

Microsoft’s attempt to make privilege elevation in Windows 11 a true security boundary ran into a harsh reality check: decades of legacy kernel behavior are hard to rewrite safely. Google Project Zero’s James Forshaw exposed multiple privilege‑escalation bypasses against the new Administrator...

Google Project Zero’s James Forshaw has pulled back the curtain on a subtle, multistage weakness that could have let attackers sidestep Microsoft’s new Administrator Protection model and silently obtain administrator privileges — and the discovery exposes how decades-old Windows behaviors can...

CVE-2026-21227 — Azure Logic Apps path traversal (Elevation of Privilege): what you need to know, how it works, and how to defend (feature analysis) Summary (TL;DR) Microsoft’s Security Update Guide lists CVE-2026-21227: an Azure Logic Apps vulnerability described as an improper limitation of a...

Microsoft’s advisory for CVE-2026-24304 identifies an elevation-of-privilege vulnerability in Azure Resource Manager that carries outsized operational risk because of the component’s role in the Azure management plane, but public technical detail is intentionally limited and the vendor’s...

Weintek’s cMT X Series HMI EasyWeb Service has been flagged in a coordinated advisory for two high-impact web‑interface vulnerabilities — CVE‑2025‑14750 and CVE‑2025‑14751 — that together allow a low‑privileged local or network user to alter assumed‑immutable web parameters, manipulate...

Schneider Electric has published a security notification confirming an Incorrect Default Permissions weakness in EcoStruxure™ Process Expert that could allow a local, low-privileged user to escalate privileges by modifying executable service binaries in the installation directory and waiting for...

A newly logged elevation‑of‑privilege flaw in the Host Process for Windows Tasks (taskhostw.exe / taskhostex.exe) gives local authenticated users a path to SYSTEM‑level effects by abusing improper link resolution (commonly called “link following”) in scheduled‑task/hosted‑task file operations —...

Microsoft’s registration of CVE‑2026‑20931 confirms a real elevation‑of‑privilege defect in the Windows Telephony Service, but the vendor’s public advisory intentionally withholds low‑level exploit primitives — making rapid patching and cautious, evidence‑based mitigations the right operational...

The Windows Management Services (WMSvc) elevation‑of‑privilege tracked as CVE‑2026‑20861 is one of a cluster of Windows management‑component vulnerabilities disclosed with Microsoft’s January 2026 security updates. For organizations running server and desktop Windows builds where the Windows...

A high‑confidence elevation‑of‑privilege vulnerability has been recorded in the Azure Connected Machine (azcmagent) / Azure Arc agent ecosystem under CVE‑2026‑21224, touching an agent component that bridges on‑host systems with the Azure management plane — a class of flaws that can convert a...

Microsoft's update guide entry for CVE-2026-21221 flags an Elevation of Privilege concern in the Capability Access Management Service (camsvc), but public technical details remain sparse and unevenly catalogued: security teams should treat the entry as a valid alert while recognizing that...

Below is a comprehensive technical write‑up on CVE-2026-20921: what it is, why it matters, how it can be exploited, detection and mitigation guidance, and recommended steps for defenders. I base the summary on Microsoft’s advisory and on Microsoft guidance for SMB hardening and common...