Vulnerability Report

CVE-2020-5544

Title: Mitsubishi Electric MELQIC IU1 series IU1-1M20-D Null Pointer Dereference

Memory Corruption

Proof Of Concept

PoC Available for CVE-2020-5544

CWE Category CWE-476
Published Date Mar 16, 2020
Modified Date Jun 17, 2026
Exploit Status Available
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
2.42%

Vulnerability Summary

CVE-2020-5544: Null Pointer Dereference vulnerability in TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier allows remote attackers to stop the network functions or execute malware via a specially crafted packet.

Impacted Vendors

M
mitsubishielectric 1

Reference Links

https://jvn.jp/en/vu/JVNVU92370624/index.html https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2019-004.pdf https://jvn.jp/en/vu/JVNVU92370624/index.html https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2019-004.pdf
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-5544 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/dgh05t/VMware_ESXI_OpenSLP_PoCs
View Code
MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.