365 Apps CVE-2026-21514
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionNVD
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
AnalysisAI
Microsoft Office Word contains a security decision bypass (CVE-2026-21514, CVSS 7.8) through reliance on untrusted inputs, allowing local attackers to bypass protections when opening malicious documents. KEV-listed, this vulnerability enables document-based attacks that circumvent Word's security features designed to protect users from malicious content.
Sign in for full analysis, threat intelligence, and remediation guidance.
RemediationAI
Within 24 hours: Inventory all Word installations across the organization and communicate vulnerability status to end-users; disable Word macro execution via Group Policy if possible. Within 7 days: Implement network monitoring for exploitation attempts and restrict Word file handling from untrusted sources; escalate to Microsoft for patch status and ETA. …
Sign in for detailed remediation steps.
More from same product – last 7 days
{filename} endpoint. The flawed traversal filter only rejects forward slashes and '..' sequences, leaving absolute Windo
Remote code execution in Microsoft Azure Orbital Spatio allows unauthenticated network attackers to upload dangerous fil
Unsafe deserialization in Microsoft Planetary Computer Pro (Geocatalog) lets a remote unauthenticated attacker craft mal
Remote code execution in Microsoft Power Pages allows unauthenticated network attackers to inject and execute operating-
Privilege elevation in Microsoft Azure Resource Manager (ARM) allows remote unauthenticated attackers to bypass authenti
Share
External POC / Exploit Code
Leaving vuln.today