EUVD-2026-73207
GHSA-vm4x-v5xq-cm6m
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only vector, low-privilege account sufficient, no user interaction; full C/I/A impact from privilege escalation to SYSTEM.
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
Heap-based buffer overflow in the Microsoft Standard XPS document handling component enables a locally authenticated attacker with low privileges to escalate to full system control across a broad range of Windows client and server releases. The vulnerability (CWE-122) resides in XPS processing logic and requires only a valid user account - no administrative rights - to trigger heap corruption and achieve arbitrary code execution at elevated privilege. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated local user session with at least low-privilege access (PR:L); unauthenticated or remote exploitation is not possible per the AV:L vector. … 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) accurately reflects a low-complexity local privilege escalation requiring only a standard user account. … 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 distributed through Microsoft's Patch Tuesday update cycle, which deliver fixed builds for all affected Windows versions as enumerated in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68890. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct an inventory of Windows client and server systems to identify affected versions (XPS processing is present across all current Windows editions). …
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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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