Microsoft 365 Copilot Vulnerability Allegedly Allowed File Access Without Audit Log Entry
Description
A vulnerability in Microsoft 365 Copilot reportedly allowed users to access and summarize files without generating audit log entries, allegedly undermining traceability and compliance. Security researcher Zack Korman disclosed the issue to Microsoft, which reportedly classified it as "important" and fixed it on August 17, 2025, but reportedly chose not to notify customers or assign a CVE.
Actors
Alleged Deployers
- microsoft
Alleged Developers
- microsoft
Harmed Parties
- organizations-relying-on-audit-logs-for-compliance-and-security
- microsoft-365-copilot-enterprise-customers
Classification
Risk Domain
Privacy & SecurityRisk Subdomain
2.2. AI system security vulnerabilities and attacks
MIT Risk Profile
Topics
Source
Related Incidents (Privacy & Security)
View all →Research Papers on This Topic
View all →StarCoder: may the source be with you!
Explainable Artificial Intelligence Applications in Cyber Security: State-of-the-Art in Research
LineVD: Statement-level Vulnerability Detection using Graph Neural Networks
TABOR: A Highly Accurate Approach to Inspecting and Restoring Trojan Backdoors in AI Systems
Mitigation Tools
Tools related to this risk domain, via shared responsible AI topics.
Open Source
View all →flair
flairNLP/flair
A very simple framework for state-of-the-art Natural Language Processing (NLP)
⭐ 14,353
PySyft
OpenMined/PySyft
Perform data science on data that remains in someone else's server
⭐ 10,041
FATE
FederatedAI/FATE
An Industrial Grade Federated Learning Framework
⭐ 6,100
adversarial-robustness-toolbox