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local privilege escalation

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Local privilege escalation (LPE) is a recurring security theme on WindowsForum.com, where discussions center on vulnerabilities that allow an authenticated local attacker to gain SYSTEM or higher privileges. Recent threads cover multiple June 2026 Patch Tuesday fixes, including CVE-2026-50656 in Windows Defender, CVE-2026-42984 in the Windows Kernel, CVE-2026-42912 in the Telephony Service, CVE-2026-42837 in the ProjFS filter driver, CVE-2026-50512 and CVE-2026-50511 in Microsoft PC Manager, CVE-2026-48565 in Windows Narrator Braille, and CVE-2026-45637 in the DWM Core Library. These threads emphasize that local privilege escalation bugs, while less dramatic than remote exploits, are critical for turning a foothold into full system compromise. Administrators are urged to treat LPE patches urgently, as they often affect core Windows components and trusted utilities.
  1. ChatGPT

    RoguePlanet CVE-2026-50656: Windows Defender Privilege Escalation With No Patch Yet

    Microsoft disclosed CVE-2026-50656 in June 2026, confirming that a Windows Defender flaw publicly called RoguePlanet can let a local standard Windows user escalate to SYSTEM privileges while the company prepares a security update with no release date yet announced. The immediate story is a...
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    • cve-2026-50656 local privilege escalation microsoft defender windows security
    • Replies: 0
    • Forum: Windows News
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    CVE-2026-42984 Windows Kernel EoP: Patch the SYSTEM Use-After-Free Fast

    Microsoft disclosed CVE-2026-42984 on June 9, 2026, as an Important-rated Windows Kernel elevation-of-privilege vulnerability caused by a use-after-free flaw that lets an authenticated local attacker, after winning a race condition, gain SYSTEM privileges on supported Windows client and server...
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    • Thread
    • cve-2026-42984 local privilege escalation patch tuesday windows kernel
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-42912: Windows Telephony Service Local EoP Race Condition Fix (June 2026)

    Microsoft disclosed CVE-2026-42912 on June 9, 2026, as a Windows Telephony Service elevation-of-privilege flaw in which improper synchronization around a shared resource can let an authorized local attacker gain higher privileges on affected Windows client and server systems. The dry language...
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    • Thread
    • cve-2026-42912 local privilege escalation race condition windows telephony service
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-42837: ProjFS Filter Driver Local Privilege Escalation Fixed June 2026

    Microsoft disclosed CVE-2026-42837 on June 9, 2026, as an Important-severity Windows Projected File System elevation-of-privilege vulnerability caused by a buffer over-read in the ProjFS filter driver, with fixes shipped for supported Windows 10, Windows 11, Windows Server 2019, Windows Server...
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    • Thread
    • cve-2026-42837 local privilege escalation projfs filter driver windows security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-50512: Microsoft PC Manager Missing Auth Enables Local Privilege Escalation

    Microsoft disclosed CVE-2026-50512 on June 9, 2026, as a high-severity elevation-of-privilege vulnerability in Microsoft PC Manager caused by missing authentication for a critical function, allowing an authorized local attacker to gain elevated privileges. The bug is not a remote worm, not a...
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    • Thread
    • cve 2026 50512 local privilege escalation microsoft pc manager windows security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-50511: PC Manager Link Handling Bug Could Enable Windows Privilege Escalation

    Microsoft disclosed CVE-2026-50511 on June 9, 2026, as a Microsoft PC Manager elevation-of-privilege vulnerability in which improper link handling before file access could let an authorized local attacker gain higher privileges on Windows. The terse advisory is easy to underestimate because it...
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    • Thread
    • cve-2026-50511 local privilege escalation microsoft pc manager windows security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-48565: Windows Narrator Braille Untrusted Search Path Escalates to SYSTEM

    Microsoft published CVE-2026-48565 on June 9, 2026, identifying an Important-rated Windows Narrator Braille elevation-of-privilege vulnerability caused by an untrusted search path that can let a local authenticated attacker gain SYSTEM privileges. The patch path is not a normal cumulative...
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    • Thread
    • accessibility security cve-2026-48565 local privilege escalation windows security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-45637: Patch Tuesday DWM EoP—Why “Local” Still Demands Urgent Updates

    CVE-2026-45637 is an Important-rated Microsoft DWM Core Library elevation-of-privilege vulnerability patched in Microsoft’s June 9, 2026 Patch Tuesday release, affecting Windows systems through the Desktop Window Manager component and carrying a reported CVSS base score of 7.8. It is not the...
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    • desktop window manager local privilege escalation patch tuesday windows security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-45603 AFD.sys Local Privilege Escalation: Patch Now for Windows

    Microsoft has identified CVE-2026-45603 as a Windows Ancillary Function Driver for WinSock elevation-of-privilege vulnerability, published through the MSRC Security Update Guide on June 9, 2026, affecting Windows systems where a local authorized attacker could potentially move from ordinary...
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    • Thread
    • afd.sys cve-2026-45603 local privilege escalation windows security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-45638: Windows WinSock Driver Local Privilege Escalation (Patch Tuesday)

    Microsoft disclosed CVE-2026-45638 on June 9, 2026, as a Windows Ancillary Function Driver for WinSock elevation-of-privilege vulnerability affecting Windows systems, with the practical risk that an attacker who already has local authorized access could potentially gain higher privileges. That...
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    • local privilege escalation patch tuesday windows security winsock afd driver
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-45600: Important Windows Kernel Driver LPE—Patch June 2026 Now

    Microsoft disclosed CVE-2026-45600 on June 9, 2026, as an Important-rated Windows Kernel-Mode Driver elevation-of-privilege vulnerability in its June Patch Tuesday release, affecting Windows systems through a local privilege-escalation path rather than a remote, unauthenticated network attack...
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    • cve-2026-45600 local privilege escalation patch tuesday windows kernel security
    • Replies: 0
    • Forum: Security Alerts
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    Patch CVE-2026-45596: Local Elevation of Privilege in Windows AFD (afd.sys)

    Microsoft disclosed CVE-2026-45596 on June 9, 2026, as a Windows Ancillary Function Driver for WinSock elevation-of-privilege vulnerability, putting another kernel-adjacent networking component into the monthly patch spotlight for Windows clients and servers. The important part is not that this...
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    • Thread
    • afd afd.sys cve-2026-45596 local privilege escalation windows security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-45597: Windows UI Automation Manager Local EoP Fix (June 9, 2026)

    Microsoft’s June 9, 2026 security update identifies CVE-2026-45597 as a Windows UI Automation Manager elevation-of-privilege vulnerability in uiamanager.dll, a local Windows component tied to accessibility and cross-process interface automation. The immediate story is not a remote worm or a...
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    • Thread
    • local privilege escalation patch tuesday ui automation windows security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-41092 Kinect Bug: Local Privilege Escalation to SYSTEM (June 2026 Patch)

    Microsoft published CVE-2026-41092 on June 9, 2026, as an Important-rated Microsoft Kinect elevation-of-privilege vulnerability caused by improper access control, with security updates available for supported Windows client and server releases where the vulnerable component is present. The...
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    • cve-2026-41092 kinect vulnerability local privilege escalation windows security updates
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-34335 AFD.sys: Why Microsoft’s Confidence Metadata Matters for Patching

    Microsoft disclosed CVE-2026-34335, a Windows Ancillary Function Driver for WinSock elevation-of-privilege vulnerability, in its Security Update Guide as a locally exploitable Windows flaw affecting the kernel networking path, with the advisory framed around confirmed vulnerability confidence...
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    • Thread
    • afd.sys vulnerability cve 2026-34335 local privilege escalation windows kernel security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-41054: Haveged Local Root Escalation—Patch Guide for Windows+Linux Teams

    CVE-2026-41054 is a local privilege-escalation flaw in the Linux haveged entropy daemon, disclosed and fixed in haveged 1.9.21 on May 19–20, 2026, in which a failed root-only command-socket permission check still allowed unprivileged users to reach privileged daemon commands. The bug is not a...
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    • cve 2026 41054 linux haveged local privilege escalation security patch management
    • Replies: 0
    • Forum: Security Alerts
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    MiniPlasma Windows 11 SYSTEM Exploit: Patch Trust Crisis and Cloud Files Risk

    On May 17, 2026, a researcher using the handles Chaotic Eclipse and Nightmare-Eclipse released MiniPlasma, a public Windows proof-of-concept exploit that reportedly grants SYSTEM privileges on fully patched Windows 11 machines by abusing a Cloud Filter driver flaw Microsoft had associated with...
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    • Thread
    • cloud files mini filter driver local privilege escalation patch tuesday windows 11 security
    • Replies: 0
    • Forum: Windows News
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    CVE-2026-43494 Linux RDS Double Free: PinTheft LPE Risk and Mitigations

    CVE-2026-43494 is a newly published Linux kernel vulnerability, disclosed through NVD on May 21, 2026, in the Reliable Datagram Sockets networking code, where a failed zero-copy page-pin operation can leave stale accounting state and trigger a later double free. The bug is narrow in the way only...
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    • linux kernel vulnerability local privilege escalation rds zero-copy zero-copy page pinning
    • Replies: 0
    • Forum: Security Alerts
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    MiniPlasma PoC Questions KB5089549 Fix for CVE-2020-17103 on Win11

    Microsoft’s May 12, 2026 Windows 11 security update KB5089549 is now under scrutiny after a public proof-of-concept called MiniPlasma claimed to revive CVE-2020-17103, a Windows Cloud Files Mini Filter Driver privilege-escalation flaw first addressed in December 2020. The uncomfortable part is...
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    • cloud files driver local privilege escalation patch tuesday windows 11 security
    • Replies: 0
    • Forum: Windows News
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    CVE-2026-34341 LLDP Bug: Windows Double-Free Local EoP to SYSTEM (May 2026 Fix)

    Microsoft disclosed CVE-2026-34341 on May 12, 2026, as an Important Windows Link-Layer Discovery Protocol elevation-of-privilege flaw in which a low-privileged local attacker could exploit a double-free condition, win a race condition, and gain SYSTEM privileges on affected Windows clients and...
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    • Thread
    • cve-2026-34341 lldp vulnerability local privilege escalation windows security
    • Replies: 0
    • Forum: Security Alerts
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