How severe is CVE-2018-5401?

CVE-2018-5401 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2018-5401 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5401?

CVE-2018-5401 primarily affects Auto-maskin Marine Pro Observer. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-5401?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-5401 published?

CVE-2018-5401 was published on 2018-10-08 and last updated on 2026-06-17.

CVE-2018-5401

CVE-2018-5401 is a critical-severity vulnerability in Auto-maskin Marine Pro Observer with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Auto-maskin Marine Pro Observer
Published: 2018-10-08
Last modified: 2026-06-17

Description

The Auto-Maskin DCU 210E, RP-210E, and Marine Pro Observer Android App transmit sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. The devices transmit process control information via unencrypted Modbus communications. Impact: An attacker can exploit this vulnerability to observe information about configurations, settings, what sensors are present and in use, and other information to aid in crafting spoofed messages. Requires access to the network. Affected releases are Auto-Maskin DCU-210E, RP-210E, and Marine Pro Observer Android App. Versions prior to 3.7 on ARMv7.

Frequently asked questions

What is CVE-2018-5401?: The Auto-Maskin DCU 210E, RP-210E, and Marine Pro Observer Android App transmit sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. The devices transmit process control information via unencrypted Modbus communications. Impact: An attacker can exploit this vulnerability to observe information about configurations, settings, what sensors are present and in use, and other information to aid in crafting spoofed messages. Requires access to the network. Affected releases are Auto-Maskin DCU-210E, RP-210E, and Marine Pro Observer Android App. Versions prior to 3.7 on ARMv7.
How severe is CVE-2018-5401?: CVE-2018-5401 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2018-5401 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5401?: CVE-2018-5401 primarily affects Auto-maskin Marine Pro Observer. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-5401?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-5401 published?: CVE-2018-5401 was published on 2018-10-08 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:auto-maskin:rp_210e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:auto-maskin:dcu_210e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:a:auto-maskin:marine_pro_observer:-:*:*:*:*:android:*:*

More vulnerabilities in Auto-maskin Marine Pro Observer

CVE-2019-6560 — Critical (CVSS 9.1): In Auto-Maskin RP210E Versions 3.7 and prior, DCU210E Versions 3.7 and prior and Marine Observer Pro (Android App), the…
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CVE-2019-6558 — High (CVSS 7.5): In Auto-Maskin RP210E Versions 3.7 and prior, DCU210E Versions 3.7 and prior and Marine Observer Pro (Android App), the…

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