EUVD-2026-73846
GHSA-32cq-4qcr-v6vp
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Document-parsing OOB read requires only user interaction to open a crafted file; no authentication or special configuration needed; read-only, so I:N/A:N.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Out-of-bounds read in Microsoft Office exposes sensitive memory contents to a remote, unauthenticated attacker who can convince a user to open a crafted document. The flaw (CWE-125) affects the full current Office portfolio - Office 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise, and their macOS counterparts - with high confidentiality impact and no integrity or availability consequence. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that a victim user actively open a specially crafted Office document - the CVSS UI:R metric confirms user interaction is mandatory. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.5 (Medium) score is plausible given the attack vector and impact profile: AV:N/AC:L/PR:N/UI:R correctly reflects that exploitation requires only that a user open a malicious document, with no special configuration or authentication needed. … 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 your Office channel: upgrade Office 2019 to build 16.0.10417.20204 or later, Office LTSC 2021 to build 16.0.14334.20896 or later, Microsoft 365 Apps for Enterprise to build 16.0.20326.20136 or later, and Office LTSC 2024 to build 16.0.17932.20960 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-125 – Out-of-bounds Read
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External POC / Exploit Code
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