CVE-2021-27424 - CVE House
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Status published Medium CVE-2021-27424

GE UR family exposure of sensitive information to an unauthorized actor

Vulnerability Description

GE UR firmware versions prior to version 8.1x shares MODBUS memory map as part of the communications guide. GE was made aware a “Last-key pressed” MODBUS register can be used to gain unauthorized information.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • SCADA-X, DOE’s Cyber Testing for Resilient Industrial Control Systems (CyTRICS) program, Verve Industrial, and VuMetric reported these vulnerabilities to GE.

Affected Vendor

Affected Software

UR family
Vulnerable Versions:
unspecified

Timeline

Official Publish: March 23rd, 2022
Last Modified: April 16th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weaknesses (CWE)