One click is still enough to bypass your entire Windows security stack. 🔓
CVE-2026-21514 · Severity 7.8 · Active exploitation of OLE bypass in Microsoft Word.
Attackers are actively utilizing this @[Microsoft](urn:li:organization:1035) zero-day to deliver malware via crafted Office documents. By exploiting a failure in OLE mitigations, this vulnerability allows an attacker to bypass the security prompts that would normally warn a user about dangerous content.
The @[CISA](urn:li:organization:13010360) has confirmed this is being used in live phishing campaigns to deliver ransomware and infostealers. When the operating system fails to provide a warning, the “human firewall” is effectively neutralized.
The uncomfortable truth: If your security strategy depends on users spotting malicious files, you have no defense against an exploit that silences the system’s own warnings.
→ Apply the February 2026 Microsoft security updates to all Office installations immediately.
→ Enforce Protected View for all documents originating from the internet or external email.
→ Disable OLE object execution via Group Policy for all non-essential business units.
Are you still relying on user training to catch what the OS should be blocking? 👇
#Cybersecurity #EndpointSecurity #PatchManagement #Infosec #SOC #CodeDefence