EUVD-2026-73516
GHSA-95p3-2r4g-hwp8
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Local attack requiring only a standard user account; symlink race is low complexity; no availability impact since WER temp file tampering does not crash the system.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Creation of temporary file in directory with insecure permissions in Windows Error Reporting allows an authorized attacker to perform tampering locally.
AnalysisAI
Windows Error Reporting (WER) across a broad range of Windows 10, Windows 11, and Windows Server releases creates temporary files in directories with insecure permissions, enabling a local attacker with standard user privileges to tamper with those files and read their contents. The vulnerability is classified as CWE-379 and carries a CVSS 3.1 score of 7.1 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N), reflecting high confidentiality and integrity impact achievable without elevated rights. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a local, authenticated session with at minimum a standard (low-privilege) user account on the affected Windows system - remote unauthenticated exploitation is not possible given AV:L/PR:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS vector (AV:L/AC:L/PR:L/UI:N) accurately describes a local, low-complexity attack requiring only a standard user account - attack complexity is genuinely low because symlink races against WER temp-file creation are mechanistically straightforward on Windows. … 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-released patches for the applicable Windows version via Windows Update or WSUS, targeting the fix build numbers listed in the affected-products section. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, Windows 11, and Windows Server systems to identify scope of exposure. …
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External POC / Exploit Code
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