EUVD-2026-73345
GHSA-jhx6-67qf-rjq9
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Archive delivered over network (AV:N/AC:L/PR:N), victim must open it (UI:R); impact is read-only file disclosure with no write or availability effect (C:H/I:N/A:N).
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Windows hard link in Windows Compressed Folder allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Windows Compressed Folder's built-in ZIP handler on Windows 11 and Windows Server 2025 allows a network-adjacent attacker to craft a malicious archive exploiting NTFS hard link abuse (CWE-65) to read sensitive files outside the intended extraction path, resulting in high-confidentiality information disclosure. Exploitation requires victim interaction - the user must open or expand the crafted compressed archive in Windows Explorer - but no attacker authentication or special privileges are needed. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must actively open or expand the crafted compressed archive using Windows Explorer's built-in Compressed Folder feature on an affected Windows 11 or Windows Server 2025 build - passive drive-by exploitation without user interaction is not possible per the UI:R CVSS metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 appropriately reflects the meaningful but bounded risk profile of this vulnerability. … 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 Microsoft security update that addresses the hard link handling flaw in Windows Compressed Folder. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-65 – Windows Hard Link
View allSame technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today