CVE-2019-9095

Administrative access via predictable cryptographic variables

Published Mar 11, 2020 · Updated Aug 4, 2024

Weak cryptography in Moxa MGate MB3xxx firmware allows remote attackers to intercept passwords and gain administrative access. The firmware protects sensitive information with a weak cryptographic algorithm whose predictable variables expose encrypted password data. Exposure covers MB3170/MB3270 4.0 and earlier, MB3180 2.0 and earlier, MB3280/MB3480 3.0 and earlier, and MB3660 2.2 and earlier; exploitation requires access to intercept password traffic.

CVSS severity6.2
Medium
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak cryptography in Moxa MGate MB3xxx firmware allows remote attackers to intercept passwords and gain administrative access. The firmware protects sensitive information with a weak cryptographic algorithm whose predictable variables expose encrypted password data. Exposure covers MB3170/MB3270 4.0 and earlier, MB3180 2.0 and earlier, MB3280/MB3480 3.0 and earlier, and MB3660 2.2 and earlier; exploitation requires access to intercept password traffic.

The record

CVE
CVE-2019-9095
Published
Mar 11, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-327, T1040
Attack vector
Unavailable
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.2MITRECVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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