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CVE-2021-20653

MEDIUM
5.3
CVSS Score
Published: February 17, 2021 at 02:05 AM UTC
Updated: June 17, 2026 at 03:34 AM UTC
12 products affected across 2 vendorsCsdj a FirmwareCsdj H FirmwareCsdj D Firmware

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%

Description

Calsos CSDJ (CSDJ-B 01.08.00 and earlier, CSDJ-H 01.08.00 and earlier, CSDJ-D 01.08.00 and earlier, and CSDJ-A 03.08.00 and earlier) allows remote attackers to bypass access restriction and to obtain unauthorized historical data without access privileges via unspecified vectors.

Affected

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

Csdj a Firmware· NEC
95%
v ≤ 03.08.00
nec-csdj-a (same device)
Csdj B Firmware· NEC
95%
v ≤ 1.08.00
nec-csdj-b (same device)
Csdj D Firmware· NEC
95%
v ≤ 1.08.00
nec-csdj-d (same device)
Csdj H Firmware· NEC
95%
v ≤ 1.08.00
nec-csdj-h (same device)
Calsos CSDJ-A· Necplatforms
60%
v ≤ 1.08.00
Calsos CSDJ-B· Necplatforms
60%
v ≤ 1.08.00
Calsos CSDJ-D· Necplatforms
60%
v ≤ 1.08.00
Calsos CSDJ-H· Necplatforms
60%
v ≤ 1.08.00
Csdj-A· NECdevice
80%
All versions
Csdj-B· NECdevice
80%
All versions

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 (2)

x_refsource_MISCThird Party Advisory
Source: [email protected]
https://jpn.nec.com/security-info/secinfo/nv21-006.html
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://jvn.jp/en/jp/JVN87164507/index.html

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-276

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