EUVD-2026-73829
GHSA-v2c5-mm5m-5xw6
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Network-delivered crafted document requires no auth; UI:R because victim must open the file; C:H for memory disclosure; I:N and A:N as read-only flaw with no write or crash path.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Out-of-bounds read in Microsoft Office Word allows an unauthenticated remote attacker to disclose memory contents when a victim opens a specially crafted document, affecting Word 2016 through Microsoft 365 Apps for Enterprise and Office LTSC 2024 on both x86 and x64 platforms. The flaw (CWE-125) resides in Word's document parser and can expose heap or stack memory to the attacker-controlled document, but is limited strictly to confidentiality impact - no code execution or integrity violation is possible from this flaw alone. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must open a specially crafted Word document in an unpatched version of Microsoft Word (Word 2016, Office 2019, Microsoft 365 Apps for Enterprise, Office LTSC 2021, or Office LTSC 2024) - exploitation cannot occur without this active user interaction (UI:R). … 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) reflects a meaningful confidentiality impact delivered over any network channel, but the UI:R constraint is the operative limiting factor: exploitation cannot occur without the victim actively opening a crafted document. … 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 through Microsoft Update, Microsoft Update Catalog, or enterprise deployment tooling (WSUS, Intune, MECM). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Information Disclosure
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External POC / Exploit Code
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