EUVD-2026-73543
GHSA-xp33-rvff-mcfj
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only attack requiring a valid low-privilege account; no race condition or complexity; full C/I/A reflects complete system control via privilege escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Absolute path traversal in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Error Reporting (WER) across virtually every supported Windows platform exploits an absolute path traversal flaw (CWE-36) to elevate a standard authenticated user to full system control. An attacker with a low-privilege local session can supply a crafted absolute path to the WER subsystem, escaping its intended directory and accessing or overwriting privileged system resources, achieving complete confidentiality, integrity, and availability impact (CVSS 7.8, AV:L/AC:L/PR:L). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated local session with at least low-privilege access - a standard domain or local user account is sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H = 7.8) accurately reflects a local privilege escalation requiring only a valid low-privilege account, no special environmental conditions, and no user interaction - a realistic and low-barrier attack. … 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 Microsoft security updates for the specific Windows build in use, available via Windows Update, Microsoft Update Catalog, or WSUS. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows systems running Windows 10, Windows 11, Server 2012, 2016, 2019, 2022, and 2025 to determine organizational exposure. …
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Same weakness CWE-36 – Absolute Path Traversal
View allSame technique Path Traversal
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External POC / Exploit Code
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