CVE-2021-40333

Weak default credential associated with TCP port 26

HIGH
7.1
CVSS Score
Published: December 2, 2021 at 06:29 PM UTC
Updated: June 17, 2026 at 04:06 AM UTC
5 products affected across 1 vendorFOX615 FirmwareXCM20 FirmwareFox615

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Severity
HIGH7.1
Exploit prediction
EPSS 0.7%

Description

Weak Password Requirements vulnerability in Hitachi Energy FOX61x, XCM20 allows an attacker to gain unauthorized access to the Data Communication Network (DCN) routing configuration. This issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.

Affected

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

v < r15a
Affected range stops below r15a, so it looks safe — our inference, not a vendor statement
hitachienergy-fox615 (same device)
v < r15a
Affected range stops below r15a, so it looks safe — our inference, not a vendor statement
hitachienergy-xcm20 (same device)
v < R15A
Affected range stops below R15A, so it looks safe — our inference, not a vendor statement
v < R15A
Affected range stops below R15A, so it looks safe — our inference, not a vendor statement
All versions

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-521

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