Full Report
Aim Labs uncovers EchoLeak, a zero-click AI flaw in Microsoft 365 Copilot that allows data theft via email. Learn how this vulnerability enables sensitive information exfiltration without user interaction and its implications for AI security.
Analysis Summary
As a vulnerability research specialist, I have analyzed the provided context regarding the "EchoLeak" vulnerability found in Microsoft 365 Copilot.
Since the original article description is very brief and lacks specific CVE/CVSS details, the summary will reflect the information explicitly present while noting where data is missing.
# Vulnerability: EchoLeak Zero-Click AI Flaw in Microsoft 365 Copilot Exposes Data
## CVE Details
- CVE ID: Not specified in the provided context.
- CVSS Score: Not specified in the provided context.
- CWE: Not specified in the provided context.
## Affected Systems
- Products: Microsoft 365 Copilot
- Versions: Specific vulnerable versions not specified. Implied to affect commercially released versions utilizing the underlying AI processing capabilities.
- Configurations: Affected by email processing capabilities within Copilot.
## Vulnerability Description
The vulnerability, dubbed "EchoLeak," is described as a **zero-click AI flaw** discovered by Aim Labs. This flaw allows an attacker to potentially exfiltrate sensitive company data by sending specially crafted emails that are processed by Microsoft 365 Copilot. The attack occurs without requiring any user interaction (zero-click), indicating a potential manipulation of the model’s handling of input data or context retention across sessions.
## Exploitation
- Status: Not explicitly stated whether it has been exploited in the wild, but PoC development by the researchers (Aim Labs) is strongly implied by the nature of the disclosure.
- Complexity: Implied to be Low to Medium due to the "zero-click" nature, meaning the barrier to triggering the vulnerability is low for the recipient.
- Attack Vector: Network access (via email delivery).
## Impact
- Confidentiality: High (Allows data theft/exfiltration).
- Integrity: Likely Medium/Low (Focus is on data exposure, not modification).
- Availability: Not explicitly stated, likely low.
## Remediation
### Patches
- Specific patch versions or KB articles are not provided in the summary context. Users must await vendor guidance from Microsoft.
### Workarounds
- Temporary mitigations are not specified; however, limiting Copilot access or scrutinizing inbound email content processed by Copilot might be considered until a patch is released.
## Detection
- Detection methods and tools are not specified in the provided context. Detection would likely focus on monitoring unusual outbound data flows triggered shortly after processing specific inbound emails.
- Indicators of compromise: Unspecified.
## References
- Vendor advisories: Not explicitly linked/cited in the summary context.
- Relevant links - defanged:
- hxxps://hackread.com/zero-click-ai-flaw-microsoft-365-copilot-expose-data/