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CVE-2026-62896Critical

Microsoft Teams Elevation of Privilege Vulnerability

MSRC advisory NVD CVE.org

Assessment

Improper authentication in Microsoft Teams allows an authorized attacker to elevate privileges over a network.

Severity
Critical
CVSS base score
9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
Impact
Elevation of Privilege
EPSS, next 30 days
0.7%Higher than 50.8% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
Exploitability
Not assessed
Publicly disclosed
No
Customer action
Not required (service-side fix)
Component
Microsoft Teams
Weakness
CWE-287: Improper Authentication
Issued by
Microsoft
Published
6 Aug 2026 · August 2026
Last revised
6 Aug 2026

Updates that fix it

0 KBs

No KB listed

MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.

Affected products

Microsoft Office
1 affected product
  • Microsoft Teams
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