CVE-2026-62873: Microsoft Windows Admin Center

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.

Affected products

• Microsoft Windows Admin Center: affected versions not specified

Published 2026-08-07. Last modified 2026-08-07.