EUVD-2026-73241
GHSA-m352-qw3h-j69p
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Malicious document delivered over network with no attacker auth; victim must open file (UI:R); full C/I/A impact on the host system.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
AnalysisAI
Heap-based buffer overflow in Microsoft Office Word enables remote code execution across all currently-supported Office editions when a victim opens a specially crafted document. Affecting Microsoft 365 Apps for Enterprise, Office 2016 through 2024 LTSC on both x86 and x64 platforms, the vulnerability requires no attacker privileges but depends on user interaction - the classic malicious-document delivery model. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must deliver a specially crafted Word document and the victim must open it in an affected version of Microsoft Word (any unpatched build of Office 2016, 2019, LTSC 2021, LTSC 2024, or 365 Apps for Enterprise). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) accurately captures the attack profile - the malicious document is network-deliverable via email or web, requires no attacker authentication, and achieves full host-level compromise if the victim opens the file. … 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 updates via Microsoft Update or the Microsoft Update Catalog. … Detailed patch versions, workarounds, and compensating controls in full report. |
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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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