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Δ / VULNERABILITY RECORD

CVE-2026-21535.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 8.2No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Feb 19, 2026

Disclosure summary

Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.

Source-reported weakness categories

CWE-284

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Feb

Open original source · Updated Feb 19, 2026

Microsoft Teams Information Disclosure Vulnerability

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 8.2

VendorProduct / associationVersion / bounds
Microsoft update guideMicrosoft Teams (MSRC status code 3)

Original records & references

PUBLISHED 2026-02-19T03:00:00-05:00
MODIFIED 2026-02-19T03:00:00-05:00
INGESTED 2026-10-08T12:45:18-04:00