What is CVE-2026-62916?

CVE-2026-62916 is a critical-severity vulnerability, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.1/10. Published 2026-09-03.

How severe is CVE-2026-62916?

Critical severity. CVSS v3 base score is 9.1 out of 10.

CVE-2026-62916

CVE-2026-62916

Authentication bypass using an alternate path or channel in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Weakness classification (CWE)

CWE-288 — Authentication Bypass Using an Alternate Path or Channel

References

secure@microsoft.com

Frequently asked questions

What is CVE-2026-62916?: CVE-2026-62916 is a critical-severity vulnerability, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.1/10. Published 2026-09-03.
How severe is CVE-2026-62916?: Critical severity. CVSS v3 base score is 9.1 out of 10.