Vulnerability in Microsoft 365 Apps for Enterprise

[ Description ]Official description

Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• CERT-FR16 Oct 2026CERTFR-2026-AVI-1331

  Multiple vulnerabilities in Microsoft Office Translated from French

  Multiple vulnerabilities have been discovered in Microsoft Office. They allow an attacker to cause remote arbitrary code execution, a breach of data confidentiality and a security policy bypass.

  CVE-2026-108446CVE-2026-108429CVE-2026-108434+26 more CVEs
• BSI CERT-Bund13 Oct 2026WID-SEC-2026-3916

  Microsoft Office products: Multiple vulnerabilities allow privilege escalation Translated from German

  CVE-2026-108433CVE-2026-97743CVE-2026-97011+209 more CVEs

[ References ]References

• msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108440Vendor Advisory