EUVD-2026-73913
GHSA-c22v-xwv3-gx6x
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only exploitation requiring a standard user account; AC:L as no special conditions described; full C/I/A impact reflects SYSTEM-level privilege escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Stack-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
AnalysisAI
Stack-based buffer overflow in the Microsoft Graphics Component enables a locally authenticated attacker to escalate privileges to SYSTEM level on affected Windows 11 and Windows Server releases. The CWE-121 flaw allows crafted input to overflow a fixed-size stack buffer in a privileged graphics subsystem component, corrupting control flow and achieving full C:H/I:H/A:H impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local authenticated access with at minimum a standard (low-privileged) user account on the target Windows system, as reflected in the CVSS PR:L metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 7.8 with AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H accurately captures the risk profile: high-impact local privilege escalation with low attack complexity, requiring only a foothold as a standard user. … 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 security update to bring all affected systems to or above the fixed build numbers confirmed in EUVD-2026-73913: Windows Server 2025 to build 10.0.26100.33438 or later; Windows Server 2022 to build 10.0.20348.5622 or later; Windows 11 23H2 to build 10.0.22631.7582 or later; Windows 11 24H2 to build 10.0.26100.9445 or later; Windows 11 25H2 to build 10.0.26200.9445 or later; Windows 11 26H1 to build 10.0.28000.2954 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 11 and Windows Server installations across the organization to determine exposure scope and identify systems with multi-user access. …
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Same weakness CWE-121 – Stack-based Buffer Overflow
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External POC / Exploit Code
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