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10.0

Microsoft Teams Missing Authorization Allows Privilege Elevation

CVE-2026-65667 · published 28 days ago
Summary

An unauthorized attacker can elevate their privileges on a network using a missing authorization in Microsoft Teams. This means they could potentially gain control over systems and data they shouldn't have access to. To protect your network, ensure that all users and devices are properly configured and authorized within Microsoft Teams.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
microsoft microsoft teams -
microsoft teams All versions
cpe:2.3:a:microsoft:teams:-:*:*:*:*:*:*:*
Original advisory text
Microsoft Teams Elevation of Privilege Vulnerability
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
References
Severity
10.0 Critical
CVSS 3.1: 10.0 (NVD)
Exploitation
EPSS <1%
Type
CWE-862Missing Authorization
Timeline
Published6 Aug 2026
Updated3 Sep 2026
First seen7 Aug 2026
Sources
CVE-2026-65667 · NVD
CVE-2026-65667 · MITRE
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