CVE-2026-21535CWE-284

Microsoft Teams Information Disclosure Vulnerability

High · published February 19, 2026

CVSS v3.1
8.2
EPSS
1%
Percentile
50.7
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00653 · 50.7th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-02-19T22:06Z
EPSS history
Timeline
  • 19 FEB 22:06Z
    Microsoft Teams Information Disclosure Vulnerability
    cvelistv5