EUVD-2026-35652
GHSA-q9cq-rj77-7rpr
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 is possible when a user opens a maliciously crafted document that triggers an untrusted pointer dereference (CWE-416 use-after-free). The flaw lets an unauthorized attacker execute arbitrary code in the context of the current user, and 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 a specifically crafted Microsoft Word document (DOC/DOCX/RTF or other Word-parsed format) on a vulnerable Office Word installation; PR:N means the attacker needs no credentials on the target, but UI:R means the attack cannot proceed without a user opening or previewing the malicious file. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) yields a base score of 7.8 - high impact across CIA but constrained by local attack vector and required user interaction, which is consistent with a document-borne exploit opened by an end user. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker emails a target a weaponized Word document - for example, a DOCX or RTF lure themed as an invoice or HR notice - and persuades the user to open it, satisfying the UI:R requirement. When Word parses a crafted structure inside the document, it dereferences a dangling pointer (use-after-free), allowing the attacker to redirect execution and run shellcode that drops a loader running as the logged-in user. … |
| Remediation | Apply the Microsoft security update referenced in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45486 as the primary fix; exact patched build numbers are not included in the supplied data and must be taken from that advisory (patch available per vendor advisory). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
24 hours: Issue security alert warning employees against opening unexpected Office documents from untrusted sources; increase email gateway scrutiny for suspicious attachments. …
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Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. [CVSS 8.4 HIGH]
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. [CVSS 8.4 HIGH]
Local code execution in Microsoft Office Word arises from an untrusted pointer dereference (CWE-822) that can be trigger
Local code execution in Microsoft Office is possible through a heap-based buffer overflow (CWE-122) that an unauthentica
Same weakness CWE-416 – Use After Free
View allSame technique Authentication Bypass
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External POC / Exploit Code
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