EUVD-2026-73917
GHSA-w8v2-qwfp-xc44
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local standard-user access required (AV:L/PR:L); heap overflow is reliably triggerable with no timing constraints (AC:L) and no user interaction; full triad impact on local system (S:U).
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to execute code locally.
AnalysisAI
Heap-based buffer overflow in the Microsoft Windows Graphics Component enables a locally authenticated attacker to achieve arbitrary code execution with full confidentiality, integrity, and availability impact (C:H/I:H/A:H) across a remarkably broad swath of Windows versions, spanning Server 2012 through Windows 11 26H1. The vulnerability (CWE-122) is reachable by any standard user account (PR:L) with no user interaction required, making it a reliable local privilege-escalation primitive for post-compromise attack chains. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the attacker hold a valid local user account on the target Windows system, corresponding to PR:L in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score with vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H accurately reflects the risk profile: local authenticated access is required (PR:L, AV:L), but once obtained, exploitation is low-complexity with no user interaction needed and full triad impact on the vulnerable system. … 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's official security update through Windows Update, Microsoft Update Catalog, or WSUS. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows systems running Server 2012 through Windows 11 26H1 and verify current patch status across your infrastructure. …
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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
Leaving vuln.today