EUVD-2026-73156
GHSA-wp6c-v5jg-mc6c
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Malicious document delivered over network requires victim to open it (UI:R); no auth needed; buffer over-read leaks memory only (C:H, I:N, A:N).
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Buffer over-read (CWE-126) in Microsoft Office Word exposes sensitive process memory to a remote unauthenticated attacker who can deliver a maliciously crafted Word document and trick a user into opening it. The flaw affects a broad range of Microsoft Office products - Microsoft 365 Apps for Enterprise, Office 2019/2021/2024 LTSC, and Word 2016 - across both Windows (x86/x64) and macOS platforms. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | User interaction is required - the victim must actively open or interact with a maliciously crafted Word document (confirmed by UI:R in the CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) correctly reflects the attack model: no attacker-side privileges required, low complexity, but mandatory user interaction constrains opportunistic 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 vendor-released patches via Microsoft Update, Windows Update for Business, or the Microsoft 365 admin center. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-126 – Buffer Over-read
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External POC / Exploit Code
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