EUVD-2026-73177
GHSA-993h-xmr6-x6x4
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Network delivery requires user script execution (UI:R); no credentials needed; integrity-only impact from out-of-bounds file write, no confidentiality or availability effect.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Improper limitation of a pathname to a restricted directory ('path traversal') in Windows PowerShell allows an unauthorized attacker to bypass a security feature over a network.
AnalysisAI
Path traversal in Windows PowerShell (CWE-22) enables network-based security feature bypass across virtually all supported Windows releases, from Server 2012 through Windows Server 2025 and Windows 11 26H2. The flaw allows an unauthenticated remote attacker - contingent on user interaction - to write files outside a restricted directory, circumventing a Windows security boundary with high integrity impact and no direct confidentiality or availability consequence. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a target user to actively execute a crafted PowerShell script or command containing malicious path traversal sequences - the UI:R CVSS metric confirms user interaction is mandatory. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N, score 6.5) positions this as a medium-severity, network-reachable integrity violation. … 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 | The primary remediation is to apply the vendor-released patch via Windows Update or WSUS, targeting the fixed build numbers listed per Windows version (see affected_products paragraph for specific build thresholds). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-22 – Path Traversal
View allSame technique Path Traversal
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External POC / Exploit Code
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