Vulnerability Details CVE-2026-21509
Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally.
Exploit prediction scoring system (EPSS) score
CVSS Severity
CVSS v3 Score 7.8
Proposed Action
Microsoft Office contains a security feature bypass vulnerability in which reliance on untrusted inputs in a security decision in Microsoft Office could allow an unauthorized attacker to bypass a security feature locally.
Ransomware Campaign
Unknown