CVE-2026-62896
Improper authentication in Microsoft Teams allows an authorized attacker to elevate privileges over a network.
CSIRTS triage
- What
- Improper authentication in Teams allows authorized attackers to elevate privileges over the network.
- Who is affected
- All Microsoft Teams deployments are affected.
- Urgency
- Critical severity (CVSS 9.6); not yet exploited but requires immediate remediation.
- Action
- Apply the latest security patch from Microsoft for Teams.
AI-assisted analysis generated from the source advisory — verify against the original.
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Advisory coverage (2)
- criticalCVE-2026-62896: Improper authentication in Microsoft Teams allows an authorized attacker to elevate privileges…nvd · 2026-08-07
- criticalCVE-2026-62896: Microsoft Teams Elevation of Privilege Vulnerabilitymsrc · 2026-08-06
External references
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[](https://www.csirts.com/cve/CVE-2026-62896)