CVE-2026-78510

Descriptive record received from OpenCTI and minimised for consultation in the Intel portal.

Sharing: PUBLIC-OSINT
Confidence: 100
Source: The CVE Program
Updated: 26/09/2026 04:07

Description

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

STIX identifiervulnerability--c4cbcec7-63ad-55aa-8ca7-ec001022dce9

First observation-

Last observation-

Known relationships19

Aliases and classifications

CWE-122Heap-based Buffer Overflow

Minimised technical details

No raw data

cisa kev: False
cvss score: 8.4
cvss vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
cvss severity: HIGH

Provenance

Public references

Microsoft Word Remote Code Execution Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78510

EudorIA correlation

Intel catalogue

The vulnerability is also available in the EudorIA editorial catalogue.

Open EudorIA analysis

Presence in OpenCTI describes an intelligence correlation and does not, by itself, constitute evidence of compromise, legal attribution or operational guidance applicable without context verification.