# CVE-2026-42831

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

- **CVSS:** 7.8 (HIGH)
- **EPSS:** 0.1%
- **CWE:** CWE-122

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-42831
Full threat coverage + IOCs via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp