CVE-2026-33823
Improper Authorization in Microsoft Teams
Publication date: 2026-05-07
Last updated on: 2026-05-08
Assigner: Microsoft Corporation
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | teams | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-285 | The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. |
Attack-Flow Graph
AI Powered Q&A
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
This vulnerability in Microsoft Teams involves improper authorization that allows an authorized attacker to disclose information over a network. Such unauthorized disclosure of information can lead to violations of data protection regulations and standards that require confidentiality and integrity of sensitive data, such as GDPR and HIPAA.
Given the high impact on confidentiality (C:H) and integrity (I:H) indicated by the CVSS score, organizations using affected versions of Microsoft Teams may face increased risk of non-compliance with these regulations if sensitive personal or health information is exposed.
Can you explain this vulnerability to me?
This vulnerability is an improper authorization issue in Microsoft Teams. It allows an authorized attacker to disclose information over a network, meaning that someone with some level of access can exploit this flaw to access or reveal information they should not be able to.
How can this vulnerability impact me? :
The impact of this vulnerability is significant because it can lead to unauthorized disclosure of sensitive information. According to the CVSS score of 9.6, it has high confidentiality and integrity impacts, meaning attackers can access and potentially manipulate sensitive data without authorization, which could compromise privacy and security.