CVE-2026-62873

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

Score

CVSS 3.1 9.8 Critical

Status

Analyzed - secure@microsoft.com

Published

2026-08-06

Last modified

2026-10-28

Weaknesses

CWE-347

Affected products

• 365 Admin Center (Microsoft)
• Windows Admin Center (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62873