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CVE-2018-20397

mplus CBC383Z CBC383Z_mplus_MDr026 devices allow remote attackers to discover credentials via iso...

9.8 Critical

CVE-2018-20397 is a critical vulnerability (CVSS 9.8) in Mplustec Cbc383z Firmware, published December 23, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.51%, the 74th percentile. No source names a fixed version.

What does this mean?
Severity
9.8 CriticalCVSS 3.0, NVD
Exploit chance
1.51%EPSS, 74th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

mplus CBC383Z CBC383Z_mplus_MDr026 devices allow remote attackers to discover credentials via iso.3.6.1.4.1.4491.2.4.1.1.6.1.1.0 and iso.3.6.1.4.1.4491.2.4.1.1.6.1.2.0 SNMP requests.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.51%Up 0.7 points since Apr 14, 2021
90%50%10%1%

Affected products

What each source reports

NVD Score used9.8

mplus CBC383Z CBC383Z_mplus_MDr026 devices allow remote attackers to discover credentials via iso.3.6.1.4.1.4491.2.4.1.1.6.1.1.0 and iso.3.6.1.4.1.4491.2.4.1.1.6.1.2.0 SNMP requests.

Record
CVE-2018-20397
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness
CWE-522
Updated
2026-11-02
CVE ListNo score

mplus CBC383Z CBC383Z_mplus_MDr026 devices allow remote attackers to discover credentials via iso.3.6.1.4.1.4491.2.4.1.1.6.1.1.0 and iso.3.6.1.4.1.4491.2.4.1.1.6.1.2.0 SNMP requests.

Record
CVE-2018-20397
Updated
2026-11-02
EUVDEUVD-2018-12955No score

mplus CBC383Z CBC383Z_mplus_MDr026 devices allow remote attackers to discover credentials via iso.3.6.1.4.1.4491.2.4.1.1.6.1.1.0 and iso.3.6.1.4.1.4491.2.4.1.1.6.1.2.0 SNMP requests.

Record
EUVD-2018-12955
Updated
2026-11-03
GitHub AdvisoriesGHSA-fc75-fxr8-wjjp9.8

mplus CBC383Z CBC383Z_mplus_MDr026 devices allow remote attackers to discover credentials via iso...

mplus CBC383Z CBC383Z_mplus_MDr026 devices allow remote attackers to discover credentials via iso.3.6.1.4.1.4491.2.4.1.1.6.1.1.0 and iso.3.6.1.4.1.4491.2.4.1.1.6.1.2.0 SNMP requests.

Record
GHSA-fc75-fxr8-wjjp
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-522
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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