CVE-2026-21535

HIGH
2026-02-19 [email protected]
8.2
CVSS 3.1
Share

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:03 vuln.today
CVE Published
Feb 19, 2026 - 23:16 nvd
HIGH 8.2

Tags

Microsoft Teams

Description

Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.

Analysis

Microsoft Teams contains an access control vulnerability that enables unauthenticated remote attackers to extract sensitive information without user interaction. The flaw affects Teams deployments and carries a high severity rating, though no patch is currently available. …

Sign in for full analysis, threat intelligence, and remediation guidance.

Remediation

Within 24 hours: Audit Teams access controls and review shared file/channel permissions for sensitivity. Within 7 days: Implement network segmentation to restrict Teams traffic; disable external sharing if not business-critical; enable advanced threat protection and audit logging. …

Sign in for detailed remediation steps.

Full analysis requires sign-in

Get intelligence summaries, risk assessment, exploit details, threat intel, and remediation guidance.

Sign in - Free

Priority Score

41
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +41
POC: 0

Share

CVE-2026-21535 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy