EUVD-2026-73414
GHSA-xcxg-rw2x-cvrq
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack requiring low-privilege authenticated session; AC:L because no special conditions described; full C/I/A impact via SYSTEM-level privilege escalation.
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
Local privilege escalation in Microsoft Standard XPS (XML Paper Specification) affects a broad swath of Windows operating systems via a heap-based buffer overflow in the XPS document handling component. An authenticated local attacker with standard user privileges can trigger the overflow to gain full system-level access, achieving high confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated local session on the target Windows system with at minimum standard user (low) privileges - consistent with CVSS PR:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reflects a realistic local privilege escalation scenario: low-privilege local access is required, complexity is low, and no user interaction is needed, resulting in full system compromise. … 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 vendor-released patches via Windows Update or WSUS targeting the fixed build numbers documented in the EUVD affected-versions list for each OS release (e.g., Windows 11 24H2 patched at 10.0.26100.9445, Windows Server 2025 at 10.0.26100.33438, Windows 10 21H2/22H2 at 10.0.19044.7725/10.0.19045.7725). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows systems in your environment and determine which versions are affected by this local privilege escalation vulnerability in XPS handling. …
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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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