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CVE-2026-21535
HIGH8.2
Description
Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.
CVE Details
CVSS v3.1 Score8.2
SeverityHIGH
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
Published2/19/2026
Last Modified2/20/2026
Sourcenvd
Honeypot Sightings0
Affected Products
microsoft:teams
Weaknesses (CWE)
CWE-284
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21535(secure@microsoft.com)
IOC Correlations
No correlations recorded
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