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ReviewCritical

CVE-2026-65667

Microsoft Microsoft Teams, teams

Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.

CVSS
10
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.07
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 10

Vulnerability overview

Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.

Affected product and versions

Product
Microsoft Microsoft Teams, teams
Affected versions
See the vendor advisory and NVD configuration data
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Microsoft Microsoft Teams, teams and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CWE
CWE-862
CVE-2026-65667 — Microsoft Microsoft Teams, teams | SECUFOCUS NOW