VULNERABILITY INTELLIGENCE

CVE-2021-27424

CVSS score5.3 MEDIUM

EPSS probability0.88%

CISA KEVNot currently listed

Published2022-03-23

Last modified2026-06-17

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

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.

Weakness classification

ics-cert@hq.dhs.gov: CWE-200
nvd@nist.gov: CWE-668

Primary references

ics-cert@hq.dhs.gov — Mitigation, Third Party Advisory, US Government Resource
ics-cert@hq.dhs.gov — Permissions Required, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108 — Permissions Required, Vendor Advisory