EUVD-2026-35690
GHSA-2872-gp33-8736
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
AnalysisAI
Local code execution in Microsoft Office Word arises from an untrusted pointer dereference (CWE-822) that can be triggered when a victim opens a crafted document. Successful exploitation grants the attacker the privileges of the current user with high impact to confidentiality, integrity, and availability, though no public exploit identified at time of analysis. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to open (or in some Office configurations, preview) a specifically crafted Word document, as encoded by AV:L and UI:R in the CVSS vector; no prior authentication to a Microsoft service is needed (PR:N), and the attacker gains only the privileges of the current user (S:U). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS vector (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) describes a local attack vector with low complexity, no privileges required, but user interaction required - consistent with the standard 'open a malicious document' pattern rather than a network-reachable service. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker emails a target a crafted .docx or .rtf attachment, or hosts it on a watering-hole site reachable via phishing link. When the recipient opens the document - or in some cases previews it in a vulnerable component - the malformed structure triggers an untrusted pointer dereference, corrupting memory in WINWORD.EXE and yielding code execution as the logged-in user, which is typically used to drop a loader for follow-on tooling. |
| Remediation | Apply the security update referenced in Microsoft's MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45643 (patch available per vendor advisory; an exact fix build was not provided in the input data and should be pulled from the Update Guide for each affected channel). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all Word deployments and document intake points; issue guidance to users against opening documents from untrusted sources. …
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Same weakness CWE-822 – Untrusted Pointer Dereference
View allSame technique Authentication Bypass
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External POC / Exploit Code
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