CVE-2026-62873CWE-347

CVE-2026-62873

Critical · published August 7, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
48.3
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00606 · 48.3th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2026-08-07T04:16Z
Affected products (1)
ProductVersionsFixed in
microsoft/windows_admin_centerall versions—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62873 · [email protected]
EPSS history
Timeline
  • 06 AUG 22:37Z
    Microsoft 365 Admin Center Elevation of Privilege Vulnerability
    cvelistv5