What is CVE-2018-5402?

CVE-2018-5402 is a critical-severity vulnerability in Arm Arm7, classified under Cleartext Transmission of Sensitive Information. CVSS score: 9.1/10. Published 2018-10-08.

How severe is CVE-2018-5402?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Arm Arm7

CVE-2018-5402

The Auto-Maskin DCU 210E, RP-210E, and Marine Pro Observer Android App use an embedded webserver that uses unencrypted plaintext for the transmission of the administrator PIN Impact: An attacker once authenticated can change configurations, upload new configuration files, and upload executable code via file upload for firmware updates. Requires access to the network. Affected releases are Auto-Maskin DCU-210E, RP-210E, and the Marine Pro Observer Android App. Versions prior to 3.7 on ARMv7.

Published 2018-10-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

References

www.kb.cert.org/vuls/id/176301 (US Government Resource, Third Party Advisory, third-party-advisory)
www.us-cert.gov/ics/advisories/icsa-20-051-04

Frequently asked questions

What is CVE-2018-5402?: CVE-2018-5402 is a critical-severity vulnerability in Arm Arm7, classified under Cleartext Transmission of Sensitive Information. CVSS score: 9.1/10. Published 2018-10-08.
How severe is CVE-2018-5402?: Critical severity. CVSS v3 base score is 9.1 out of 10.