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CVE-2021-27424

GE UR family exposure of sensitive information to an unauthorized actor

MEDIUM

5.3

CVSS Score

Published: March 23, 2022 at 07:46 PM UTC

Updated: June 17, 2026 at 03:44 AM UTC

39 products affected across 1 vendorMultilin L60 FirmwareMultilin F35 FirmwareMultilin D60 Firmware

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Severity

MEDIUM5.3

Exploit prediction

EPSS 0.9%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Multilin B30 Firmware · Ge

95%

v < 8.10

Affected range stops below 8.10, so it looks safe — our inference, not a vendor statement

ge-multilin-b30 (same device)

Multilin B90 Firmware · Ge

95%

v < 8.10

Affected range stops below 8.10, so it looks safe — our inference, not a vendor statement

ge-multilin-b90 (same device)

Multilin C30 Firmware · Ge

95%

v < 8.10

Affected range stops below 8.10, so it looks safe — our inference, not a vendor statement

ge-multilin-c30 (same device)

Multilin C60 Firmware · Ge

95%

v < 8.10

Affected range stops below 8.10, so it looks safe — our inference, not a vendor statement

ge-multilin-c60 (same device)

Multilin C70 Firmware · Ge

95%

v < 8.10

Affected range stops below 8.10, so it looks safe — our inference, not a vendor statement

ge-multilin-c70 (same device)

Multilin C95 Firmware · Ge

95%

v < 8.10

Affected range stops below 8.10, so it looks safe — our inference, not a vendor statement

ge-multilin-c95 (same device)

Multilin D30 Firmware · Ge

95%

v < 8.10

Affected range stops below 8.10, so it looks safe — our inference, not a vendor statement

ge-multilin-d30 (same device)

Multilin D60 Firmware · Ge

95%

v < 8.10

Affected range stops below 8.10, so it looks safe — our inference, not a vendor statement

ge-multilin-d60 (same device)

Multilin F35 Firmware · Ge

95%

v < 8.10

Affected range stops below 8.10, so it looks safe — our inference, not a vendor statement

ge-multilin-f35 (same device)

Multilin F60 Firmware · Ge

95%

v < 8.10

Affected range stops below 8.10, so it looks safe — our inference, not a vendor statement

ge-multilin-f60 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_CONFIRMMitigationThird Party AdvisoryUS Government Resource

Source: [email protected]

https://www.cisa.gov/uscert/ics/advisories/icsa-21-075-02

x_refsource_CONFIRMPermissions RequiredVendor Advisory

Source: [email protected]

https://www.gegridsolutions.com/Passport/Login.aspx

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMicscert

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: LOW
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-200CWE-668

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