EUVD-2026-73031
GHSA-crrw-6jw8-jqpj
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Network-reachable client-side parser; PR:L and UI:R reflect attacker hosting server and victim initiating connection; successful heap overflow yields full code execution.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows HTTP Print Provider allows an authorized attacker to execute code over a network.
AnalysisAI
Heap-based buffer overflow in the Windows HTTP Print Provider component enables an authorized low-privilege network attacker to achieve remote code execution with full C/I/A impact on affected Windows systems. The vulnerability spans an exceptionally wide range of Microsoft operating systems from Windows Server 2012 through Windows 11 25H2/26H1 and Windows Server 2025. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires three conditions to be met simultaneously. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H yields a score of 8.0, reflecting network-reachable exploitation with low complexity but two limiting factors: low-privilege authentication (PR:L) and required user interaction (UI:R). … 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 updates listed in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69623, targeting the specific build thresholds per OS version listed in the affected products. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct an inventory of all Windows Server (2012-2025) and Windows 11 systems to identify those running Print Services or exposed via HTTP Print Provider; assess exposure by network location and trust boundaries. …
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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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