Critical CVSS 9.9 EPSS 0.00711 2026-05 archive

Executive Summary

Improper access control in Azure Managed Instance for Apache Cassandra allows an authorized attacker to execute code over a network.

Overview

9.9
CVSS CRITICAL
Critical
MS Severity
Not Exploited
MS Exploit Status
N/A
MS Exploit Likelihood
Category Remote Code Execution
Released May 12 2026
Last Updated May 12 2026
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00711 — 0.48668 percentile
NVD CVSS 9.9 CRITICAL — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/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
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 8.6

EPSS Score

0.00711
probability of exploitation in the next 30 days
0.48668 percentile - updated 2026-06-21
View on FIRST.org

Known Exploits

Acknowledgments

Sharath Unni