Critical CVSS 9.6 EPSS 0.00389 2026-04 archive

Executive Summary

Improper access control in Microsoft Partner Center allows an authorized attacker to elevate privileges over a network.

Overview

9.6
CVSS CRITICAL
Critical
MS Severity
Not Exploited
MS Exploit Status
N/A
MS Exploit Likelihood
Category Elevation of Privilege
Released Apr 14 2026
Last Updated Apr 14 2026
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00389 — 0.30571 percentile
NVD CVSS 9.6 CRITICAL — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Changed
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
None
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 8.3

EPSS Score

0.00389
probability of exploitation in the next 30 days
0.30571 percentile - updated 2026-06-21
View on FIRST.org

Known Exploits

Acknowledgments

Shyam Datti with Microsoft Corporation