EUVD-2026-73475
GHSA-hqw9-pr48-hp86
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-delivered document exploit requiring user to open the file (UI:R); no attacker privileges; full triad impact consistent with heap overflow yielding arbitrary code execution.
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 when a victim opens a specially crafted document. Exploitation requires no attacker privileges but does require user interaction, making phishing-delivered malicious documents the expected delivery mechanism. …
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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 a malicious Word document (UI:R per CVSS). … 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 characterizes the attack profile: no attacker authentication, low complexity, broad network delivery, limited only by the need for a victim to open a 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 the vendor-released patch via Microsoft's Security Update Guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69360. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running Microsoft Office Word and identify the user population at risk. …
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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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