EUVD-2026-73209
GHSA-7849-mmw2-6h79
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low privilege required to trigger XPS heap overflow; full C/I/A:H reflects SYSTEM-level takeover post-escalation with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in Microsoft Standard XPS (XML Paper Specification), the Windows-integrated document format and print subsystem, enables a low-privileged local user to escalate to SYSTEM or administrator-level privileges across a broad range of Windows desktop and server releases. The flaw falls under CWE-122 and, given AC:L/PR:L/UI:N, requires only an existing standard user session and the ability to trigger XPS processing - no race condition or second-user interaction is needed. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an active low-privileged local user session on the target system; the CVSS PR:L metric confirms a standard user account is the minimum bar, and anonymous or purely remote access is not sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score is appropriate for this class of local privilege escalation: AV:L bounds exposure to adversaries who already possess local code execution, significantly narrowing the attack surface relative to network-reachable flaws. … 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 security update for the relevant Windows build, available through Windows Update, WSUS, and Microsoft Update Catalog; consult the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68892 for the full per-version patch matrix with target build numbers. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and catalog all Windows systems in your environment (desktop, laptop, and server editions) and determine which are actively using XPS functionality through print subsystems or document processing. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Privilege Escalation
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External POC / Exploit Code
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