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Windows PowerShell EUVDEUVD-2026-73625

| CVE-2026-69807 HIGH
Path Traversal (CWE-22)
2026-09-08 secure@microsoft.com GHSA-r57c-9749-hr2p
8.0
CVSS 3.1 · Vendor: microsoft
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Severity by source

Vendor (microsoft) PRIMARY
8.0 HIGH
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
8.0 HIGH

Network-reachable via WinRM with low-privilege auth, user interaction required, full C/I/A impact from successful privilege escalation to SYSTEM.

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

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Sep 09, 2026 - 05:24 vuln.today
Patch available
Sep 08, 2026 - 18:35 EUVD
CVE Published
Sep 08, 2026 - 18:19 cve.org
HIGH 8.0

DescriptionCVE.org

Improper limitation of a pathname to a restricted directory ('path traversal') in Windows PowerShell allows an authorized attacker to elevate privileges over a network.

AnalysisAI

Path traversal in Windows PowerShell enables a low-privileged, network-authenticated attacker to escalate privileges to higher access levels across a broad range of Windows desktop and server versions. The flaw (CWE-22) allows improper resolution of file paths outside a restricted directory boundary within the PowerShell subsystem, reachable over the network with user interaction required. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation The attacker must hold a valid low-privileged account (local or domain) on the target system, satisfying the PR:L CVSS metric - unauthenticated exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 8.0 base score reflects a network-reachable, low-privilege, user-interaction-required privilege escalation with full C/I/A impact - a credible high-severity finding. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the vendor-released patches via Windows Update or WSUS to bring all affected systems to the fixed build versions listed per-release in the EUVD data (e.g., Windows Server 2025 to ≥10.0.26100.33438, Windows 11 24H2/25H2 to ≥10.0.26100.9445/10.0.26200.9445, Windows 10 22H2 to ≥10.0.19045.7725). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory Windows systems running PowerShell and cross-reference against Microsoft's advisory to identify affected versions. …

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EUVD-2026-73625 vulnerability details – vuln.today

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