Important CVSS 9.8 EPSS 0.03129 2019-02 archive

Executive Summary

An elevation of privilege vulnerability exists in the way Azure IoT Java SDK generates symmetric keys for encryption, allowing an attacker to predict the randomness of the key. An attacker could derive the keys from the way they are generated and use them to access a user's IoT hub. This update addresses the vulnerability by randomizing the key generation within Azure IoT SDK.

Overview

9.8
CVSS CRITICAL
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released Feb 12 2019
Last Updated Feb 12 2019
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.03129 — 0.86504 percentile
NVD CVSS 9.8 CRITICAL — differs from MSRC

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged

EPSS Score

0.03129
probability of exploitation in the next 30 days
0.86504 percentile - updated 2026-07-25
View on FIRST.org

Affected Products

1 affected product
Product KB Article Severity Impact Restart Required
Java SDK for Azure IoT Release Notes (Security Update) Important Elevation of Privilege Maybe

Patches

1 patch
Article Type Restart
Release Notes Security Update Maybe

Known Exploits

Acknowledgments

None