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CVE-2026-65667

criticalCVSS 10covered by 1 sourcefirst seen 2026-08-06
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.

CSIRTS triage

vendor: Microsoftproduct: Microsoft TeamsPrivilege escalation
What
Missing authorization allows unauthorized attackers to elevate privileges over a network.
Who is affected
All Microsoft Teams deployments are affected.
Urgency
Critical severity (CVSS 10) with no current exploitation reported; immediate patching required.
Action
Apply Microsoft security updates for Microsoft Teams immediately.

AI-assisted analysis generated from the source advisory — verify against the original.

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Advisory coverage (1)

External references

NVD record for CVE-2026-65667

CVE.org record

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