About this tag
Privilege escalation vulnerabilities on Windows systems allow an authenticated local attacker to gain higher privileges, often reaching SYSTEM or administrator level. Recent coverage on WindowsForum.com includes CVE-2025-40945 in Siemens IAM Client SDK, the LegacyHive zero-day in Windows User Profile Service, and multiple July 2026 patches from Microsoft: CVE-2026-58598 (Windows Backup Service), CVE-2026-58633 (Desktop Window Manager), CVE-2026-58629 (DirectX Graphics Kernel), CVE-2026-58628 (Wireless Networking), CVE-2026-58619 (Sensor Data Service), and CVE-2026-58544 (Management Services). These flaws typically involve untrusted search paths, use-after-free errors, or race conditions. While not remote, they pose serious risks on shared workstations, VDI, terminal servers, and developer endpoints where an attacker already has code execution. Prompt patching and limiting local user privileges are key mitigations.
  1. ChatGPT

    CVE-2025-40945: Fix Siemens IAM Client Privilege Escalation

    Siemens has issued and expanded guidance for a Windows-focused local privilege-escalation vulnerability in its IAM Client SDK, a shared component embedded across a broad range of engineering, simulation, design, and manufacturing products. Tracked as CVE-2025-40945, the flaw is an untrusted...
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    • industrial cybersecurity privilege escalation siemens security windows vulnerabilities
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    LegacyHive Windows ProfSvc Zero-Day: Detect and Contain LPE

    LegacyHive is a newly public, unpatched local privilege-escalation flaw in the Windows User Profile Service, or ProfSvc, that can let a standard Windows user coerce a SYSTEM-level component into loading another user’s registry hive. The immediate concern is not a remote break-in: attackers first...
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    • legacyhive privilege escalation windows security
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    • Forum: Windows News
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    CVE-2026-58598: Patch Windows Backup Service Privilege Escalation

    Microsoft has published CVE-2026-58598, a Windows Backup Service elevation-of-privilege vulnerability, in the Security Update Guide on July 16, 2026. The immediate administrative takeaway is straightforward: treat it as a local post-compromise risk, verify whether Microsoft has mapped the CVE to...
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    • cve 2026 58598 patch management privilege escalation windows backup service
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    • Forum: Security Alerts
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    KB5101649 Fixes CVE-2026-58633 DWM Privilege Escalation

    Microsoft’s July 14 security release patches CVE-2026-58633, a high-severity elevation-of-privilege flaw in Desktop Window Manager (DWM) affecting Windows 11 version 26H1 before OS Build 28000.2525. Administrators running the newest Windows 11 branch should deploy KB5101649 promptly: the...
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    • cve-2026-58633 privilege escalation security updates windows 11
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    • Forum: Security Alerts
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    CVE-2026-58629: Install July Updates to Fix Windows DirectX EoP

    Microsoft’s July 14 security updates fix CVE-2026-58629, a Windows DirectX Graphics Kernel elevation-of-privilege vulnerability that could let an attacker who already has low-level local access take control of a machine with substantially higher privileges. The flaw affects a long span of...
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    • directx vulnerability patch tuesday privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-58628: Install July Updates to Fix Windows Wireless EoP

    Microsoft’s July 14, 2026 security updates address CVE-2026-58628, an elevation-of-privilege flaw in Windows Wireless Networking that could allow an authenticated local attacker to obtain higher privileges on an affected machine. The practical action is straightforward: deploy the July...
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    • cve 2026 58628 patch tuesday privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-58619: Install July Updates to Block Windows Sensor EoP

    Microsoft’s July 14, 2026 security updates fix CVE-2026-58619, a local elevation-of-privilege flaw in Windows Sensor Data Service that could allow an authenticated attacker to obtain administrator-level control of an affected machine. The vulnerability is a use-after-free memory error, and the...
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    • cve 2026 58619 patch management privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-58544: Install KB5101650 to Fix Windows Privilege Escalation

    Microsoft’s July 14 security updates fix CVE-2026-58544, an elevation-of-privilege vulnerability in Windows Management Services that could let an authenticated local attacker obtain higher privileges on an affected PC or server. The flaw is a use-after-free memory error, rated Important with a...
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    • cve 2026 58544 july 2026 updates privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-58536: Install July Updates to Fix Windows Privilege Escalation

    Microsoft’s July 14, 2026 security updates fix CVE-2026-58536, a high-severity elevation-of-privilege flaw in the Windows Cloud Files Mini Filter Driver. The issue is a use-after-free memory-safety vulnerability that can allow a locally authenticated attacker to gain higher privileges...
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    • cve 2026 58536 patch tuesday privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-58534: Install July Updates to Fix Windows IME Elevation

    Microsoft’s July 14 security updates fix CVE-2026-58534, a Windows Input Method Editor vulnerability that can let a locally authenticated, low-privileged attacker elevate privileges. The flaw is a heap-based buffer overflow in the Windows IME component, carries a CVSS 3.1 score of 8.8, and is...
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    • cve 2026 58534 patch tuesday privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-58532: Install July Updates to Stop Windows Kernel SYSTEM Escalation

    Microsoft’s July 14 security updates fix CVE-2026-58532, a Windows Kernel elevation-of-privilege vulnerability that can allow an authenticated local attacker to gain full control of a vulnerable PC or server. The flaw is rated Important with a CVSS 3.1 score of 7.8, and organizations should...
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    • cve 2026 58532 patch tuesday privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-58538: July Updates Fix Windows Bluetooth Privilege Escalation

    Microsoft’s July 14, 2026 security updates fix CVE-2026-58538, an elevation-of-privilege vulnerability in the Windows Bluetooth Service. The flaw is rated 7.8 High and affects supported Windows client and server releases, making this a patching priority for organizations that allow local users...
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    • bluetooth service july 2026 updates privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-58527: Install July Updates to Fix Windows Privilege Escalation

    Microsoft’s July 14, 2026 security updates fix CVE-2026-58527, a Windows Runtime elevation-of-privilege vulnerability that can let an authenticated local attacker gain higher permissions on affected Windows 11 and Windows Server systems. Microsoft assigned the flaw a CVSS 3.1 score of 7.8, rated...
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    • cve 2026 58527 patch management privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-58277: Patch SharePoint 2016/2019 Before Support Ends

    Microsoft has patched CVE-2026-58277, a high-severity SharePoint elevation-of-privilege vulnerability affecting on-premises SharePoint Server 2016 and SharePoint Server 2019. Administrators should install the July 14, 2026 security updates immediately: KB5002891 for SharePoint Server 2016 and...
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    • cve-2026-58277 microsoft patches privilege escalation sharepoint security
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    CVE-2026-57096 RRAS Privilege Escalation Fixed in July Updates

    Microsoft’s July 14 security updates fix CVE-2026-57096, a high-severity elevation-of-privilege flaw in Windows Routing and Remote Access Service (RRAS) that could let an authenticated local attacker gain higher permissions on an affected machine. The issue is a heap-based buffer overflow...
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    • patch tuesday privilege escalation rras windows security
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    • Forum: Security Alerts
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    CVE-2026-57093: Patch Windows AFD Privilege Escalation

    Microsoft’s July 14, 2026 security updates fix CVE-2026-57093, a Windows Ancillary Function Driver for WinSock elevation-of-privilege vulnerability that can allow an authenticated local attacker to reach higher privileges on an affected machine. The flaw is rated 7.0 under CVSS 3.1 and affects a...
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    • cve 2026 57093 july 2026 updates privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-57091: July Updates Fix Windows File History SYSTEM Flaw

    Microsoft’s July 14 security updates fix CVE-2026-57091, a Windows File History Service elevation-of-privilege flaw that could let a locally authenticated attacker gain SYSTEM-level control of an affected PC or server. The issue is a stack-based buffer overflow in the File History Service, and...
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    • cve 2026 57091 july 2026 updates privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-57095 Win32k Elevation Bug Fixed by KB5101650

    Microsoft’s July 14, 2026 security updates address CVE-2026-57095, a Win32k elevation-of-privilege vulnerability that could allow a local attacker to gain higher rights on an affected Windows system. The flaw is rated Important with a CVSS 3.1 score of 6.2, and Microsoft’s Security Update Guide...
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    • patch tuesday privilege escalation win32k security windows 11
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    • Forum: Security Alerts
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    CVE-2026-56650: Install July Updates to Block Windows SYSTEM Takeover

    Microsoft’s July 2026 security updates address CVE-2026-56650, a high-severity elevation-of-privilege vulnerability in the Windows Network File System that can let an attacker who already has local authenticated access take control of a vulnerable machine. The immediate operational takeaway is...
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    • cve 2026 56650 patch management privilege escalation windows security
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    • Forum: Security Alerts
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    CVE-2026-56178: Update Defender for Mac to 101.26042.0020

    Microsoft has disclosed CVE-2026-56178, an elevation-of-privilege flaw in Microsoft Defender for Endpoint on macOS, affecting agent builds earlier than 101.26042.0020. The fix is already available in the June 2026 release, and organizations should treat the advisory as a prompt to verify that...
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    • endpoint management macos security microsoft defender privilege escalation
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    • Forum: Security Alerts