MicrosoftRadar Independent status for Microsoft services

Microsoft Teams Spoofing Vulnerability

CVE-2026-116926 is a spoofing vulnerability in Microsoft Teams (rated Important, CVSS 7.5).

1 version

Facts

Microsoft id
CVE-2026-116926
Products
Microsoft Teams
Severity
Important
Impact
Spoofing
CVSS
7.5
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
Customer action required
Yes
Release
2026-Nov
Assigned by
Microsoft
Weakness
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
MSRC revision
1.0
Status pages
Microsoft Teams status
First captured by us
Microsoft last modified
Source
Security updates · open the original at Microsoft

Microsoft's revision notes

  1. Revision 1.0, 2026-11-10: Information published.

Microsoft says

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.

Security updates,

Read Microsoft's full post

What Microsoft changed

One version so far. If Microsoft edits it, each change shows here with what was removed and added.

  1. First version we captured ·

    The text as we first saw it

    Seen by us · Microsoft's timestamp · Microsoft's page

Other changes for Microsoft Teams

Last updated