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Severity by source

Vendor (microsoft) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CIRCL (temporal)
6.8 MEDIUM
cvss
vuln.today AI
7.8 HIGH

Local EoP requiring an existing low-privileged account (AV:L, PR:L), no user interaction or added complexity, yielding full SYSTEM-level C/I/A within unchanged scope.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 14, 2026 - 21:09 vuln.today
CVE Published
Jul 14, 2026 - 17:06 nvd
HIGH 7.8

DescriptionCVE.org

Improper access control in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

AnalysisAI

Local privilege escalation in the Microsoft Windows Search component lets an already-authenticated low-privilege user gain SYSTEM-level rights through improper access control (CWE-284). It affects all currently supported Windows client and server builds from Windows 10 1809 through Windows 11 26H1 and Windows Server 2019 through 2025. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privileged local account
Delivery
Invoke vulnerable Windows Search operation
Exploit
Bypass improper access-control check
Execution
Execute action as elevated service
Impact
Gain SYSTEM privileges

Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to already hold valid local, low-privileged access to the target Windows machine (CVSS PR:L, AV:L), and the Windows Search component must be present and running - which it is by default on all listed client and server SKUs. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (7.8, High) describes a local attack requiring only low existing privileges, low complexity, and no user interaction, yielding full confidentiality, integrity, and availability impact within the same scope - a classic reliable local EoP profile. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has already obtained a standard, non-administrative account on a Windows host - for example through phishing, a stolen credential, or a shared terminal server - invokes the vulnerable Windows Search functionality to abuse its improper access-control check and execute code or actions in the security context of the elevated service, obtaining SYSTEM-level privileges. Given AC:L and UI:N, the technique is low-complexity and needs no victim interaction once the attacker has local access; no public POC was provided in the source data.
Remediation Patch available per vendor advisory - apply the Microsoft security update for CVE-2026-50373 via Windows Update or your patch-management system as the primary fix, selecting the KB that matches each affected SKU (Windows 10 1809/21H2/22H2, Windows 11 24H2/25H2/26H1, Windows Server 2019/2022/2025 including Server Core) as listed at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50373; exact fixed build numbers should be taken from that advisory rather than assumed. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all systems running Windows 10 versions 1809 through current, Windows 11 through build 26H1, or Windows Server 2019-2025, and classify by criticality. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-43908 vulnerability details – vuln.today

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