365 Apps CVE-2026-20949
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
AnalysisAI
Microsoft Office Excel in the Long Term Servicing Channel and 365 Apps contains an access control bypass vulnerability that allows a local attacker with user interaction to gain unauthorized access to sensitive data and modify or delete system resources. The vulnerability requires local access and user interaction to exploit, affecting the confidentiality, integrity, and availability of affected systems. …
Sign in for full analysis, threat intelligence, and remediation guidance.
RemediationAI
Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.
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