EUVD-2026-73153
GHSA-qvgr-2qcg-3rc3
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Network delivery of malicious document requires only user-open interaction (UI:R); no attacker auth needed; pure read-only memory disclosure yields C:H with no integrity or availability impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Integer overflow in Microsoft Office Word's document parsing engine triggers an out-of-bounds read (CWE-125), enabling a remote unauthenticated attacker to disclose potentially sensitive memory contents by inducing a victim to open a specially crafted document. Affected products span Office 2016 through LTSC 2024 and Microsoft 365 Apps for Enterprise on both Windows and macOS. …
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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 using an unpatched version of Microsoft Office Word on Windows or macOS - this is the sole required user interaction (UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) correctly captures a network-reachable, low-complexity attack whose only mitigation at the vector level is the need for user interaction. … 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 patches released for this vulnerability, which are available via Windows Update, Microsoft Update Catalog, or Microsoft 365 Admin Center. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
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