Product:
Microsoft Teams
Summary
Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network. This vulnerability can lead to significant confidentiality issues as sensitive information may be exposed. The attack does not require any user interaction or special privileges, making it particularly concerning.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 8.2 | CVE-2026-21535 |
Exploitation
To exploit this vulnerability, an attacker can leverage the improper access control mechanisms within Microsoft Teams. By sending specially crafted requests over the network, the attacker can gain unauthorized access to sensitive information. The low complexity of the attack means that even individuals with minimal technical skills could potentially exploit this vulnerability.
Affected Products
- Microsoft Teams: A collaboration platform that integrates workplace chat, video meetings, file storage, and application integration.
Mitigation
To mitigate this vulnerability, it is essential to apply the latest security updates provided by Microsoft. Users should also review their access control settings and ensure that only authorized personnel have access to sensitive information within Microsoft Teams. Regular security audits and monitoring can help identify and address potential vulnerabilities.