CVE-2026-62873 CRITICAL

CVE-2026-62873: Microsoft 365 Admin Center Elevation of Privilege Vulnerability

Vendor Microsoft

Product Microsoft 365 Admin Center

Weakness CWE-347

Published August 6, 2026

Last update August 14, 2026

View on NVD All CVEs

CVSS base score

9.8/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

August 6, 2026 CVE published

August 14, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-62873 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/347.html AskarLabs — CWE-347 write-up Improper Verification of Cryptographic Signature

Related vulnerabilities

04Related CVE

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