EUVD-2026-73417
GHSA-m865-rr78-cw7r
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low-privilege auth required; no user interaction or special conditions needed; full triad impact consistent with SYSTEM-level heap-overflow LPE.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Microsoft Standard XPS (XML Paper Specification), a document processing and print pipeline component embedded across Windows desktop and server editions, allows a locally authenticated low-privileged user to achieve full system compromise. The heap-based buffer overflow (CWE-122) produces high confidentiality, integrity, and availability impact (C:H/I:H/A:H) consistent with SYSTEM-level takeover. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid low-privilege local user account on an affected Windows system - the CVSS PR:L metric confirms authentication is necessary, and AV:L confirms the attack cannot be conducted remotely without prior local access. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects a local privilege escalation that requires only a standard authenticated account and no user interaction, with no network exposure requirement. … 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 security update via Windows Update, WSUS, or Microsoft Update Catalog targeting the specific build thresholds listed per OS version (e.g., Windows 10 22H2 must reach 10.0.19045.7725 or later; Windows Server 2025 must reach 10.0.26100.33438 or later). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Within 24 hours, identify and catalog all Windows desktop and server systems to assess exposure scope across your organization. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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