EUVD-2026-73208
GHSA-928c-rp57-8r75
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Network-delivered XPS document requires authenticated user (PR:L) to open it (UI:R); successful heap overflow yields full local system compromise.
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 over a network.
AnalysisAI
Heap-based buffer overflow in Microsoft's Windows XPS (XML Paper Specification) document handling component enables a network-reachable, low-privileged authenticated attacker to escalate privileges to a higher level, with full confidentiality, integrity, and availability impact on the affected system. The vulnerability spans an exceptionally broad range of Windows client and server releases from Windows Server 2012 through Windows Server 2025 and Windows 10/11. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) the attacker holds a low-privileged authenticated account (domain user or local non-admin) on a network-reachable system, satisfying CVSS PR:L; (2) a target user must open or preview a specially crafted XPS document, satisfying CVSS UI:R - exploitation cannot occur without this interaction; (3) the targeted Windows system runs an unpatched build across any of the 19 affected SKUs listed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.0 (AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H) reflects a moderately high bar - the attacker must be authenticated (PR:L) and requires user interaction (UI:R), which meaningfully limits opportunistic mass exploitation. … 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 security update immediately via Windows Update or WSUS; specific fixed build numbers per release are listed in the affected products section and in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69271. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server 2012-2025 and Windows 10/11 systems in your environment and assess patch readiness for XPS updates, prioritizing business-critical servers and externally-accessible systems. …
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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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