HOMEVULNERABILITIESCVE-2020-6995
CRITICAL

CVE-2020-6995

CWE-521Published: March 24, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

In Moxa PT-7528 series firmware, Version 4.0 or lower, and PT-7828 series firmware, Version 3.9 or lower, the application utilizes weak password requirements, which may allow an attacker to gain unauthorized access.

NVD Source

Technical Analysis

CVE-2020-6995 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

moxa110 product(s)
pt-7528-24tx-hv firmwarept-7528-24tx-hvpt-7528-24tx-hv-hv firmwarept-7528-24tx-hv-hvpt-7528-24tx-wv firmwarept-7528-24tx-wvpt-7528-24tx-wv-hv firmwarept-7528-24tx-wv-hvpt-7528-24tx-wv-wv firmwarept-7528-24tx-wv-wvpt-7528-12msc-12tx-4gsfp-hv firmwarept-7528-12msc-12tx-4gsfp-hv+98
Source: NVD CPE · 110 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.us-cert.gov/ics/advisories/icsa-20-056-03
ADVISORYhttps://www.us-cert.gov/ics/advisories/icsa-20-056-03

All References (2)

→
https://www.us-cert.gov/ics/advisories/icsa-20-056-03Third Party Advisory · US Government Resource
→
https://www.us-cert.gov/ics/advisories/icsa-20-056-03Third Party Advisory · US Government Resource

Quick Facts

CVE IDCVE-2020-6995
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-521
CISA KEVNo
Affected1 vendor(s)
PublishedMar 24, 2020

Related CVEs (CWE-521)

CVE-2019-19690
9.8
CVE-2019-19747
9.8
CVE-2018-19064
9.8
CVE-2019-9123
9.8
CVE-2019-7674
9.8
CVE-2020-6991
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-6995 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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