Microsoft Office Vulnerability Discovered by French Cybersecurity Agency

A vulnerability was discovered in Microsoft Office on 21 August 2026, allowing attackers to compromise data confidentiality. The flaw was reported by the French national cybersecurity agency (ANSSI) via its CERT-FR team. No specific technical details, such as CVE identifiers, affected versions, or exploitation vectors, were provided in the notice. The impact is limited to unauthorized access to sensitive information, as explicitly stated. The advisory was published under reference CERTFR-2026-AVI-1072.