PT-2020-18521 · Mitsubishi · Melqic Iu1 Series

Published 2020-03-16 · Updated 2020-03-19 · CVE-2020-5546

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware versions 1.0.7 and earlier

Description The issue is related to an "Improper Neutralization of Argument Delimiters in a Command" or 'Argument Injection' in the TCP function of the firmware. This allows an attacker on the same network segment to potentially stop the network functions or execute malware by sending a specially crafted packet.

Recommendations For Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware versions 1.0.7 and earlier, update to a version later than 1.0.7 to resolve the issue. At the moment, there is no information about additional mitigation measures.

Fix

Argument Injection

Weakness Enumeration

CWE-88

Related Identifiers

CVE-2020-5546

Affected Products

Melqic Iu1 Series

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-5546 · Security Note
• https://mitsubishielectric.co.jp/psirt/vulnerability/pdf/2019-004.pdf · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-5546 · Vendor Advisory
• https://jvn.jp/en/vu/JVNVU92370624/index.html · Note
• https://t.me/cvenotify/1726 · Telegram Post