CVE-2021-20776

CRITICAL
9.8
CVSS Score
Published: July 7, 2021 at 07:05 AM UTC
Updated: June 17, 2026 at 03:34 AM UTC
4 products affected across 1 vendorAt 40CM01SR FirmwareSct 40CM01SR FirmwareSCT-40CM01SR

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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%

Description

Improper authentication vulnerability in SCT-40CM01SR and AT-40CM01SR allows an attacker to bypass access restriction and execute an arbitrary command via telnet.

Affected

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

All versions
a-stage-inc-at-40cm01sr (same device)
All versions
a-stage-inc-sct-40cm01sr (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCThird Party Advisory
https://jvn.jp/en/jp/JVN21636825/index.html

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-287

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