Vulnerability Report

CVE-2020-5656

RCE

Title: Improper Access Control in MELSEC iQ-R series TCP/IP function

DoS, RCE

Proof Of Concept

No public PoC currently indexed for CVE-2020-5656.

CWE Category NVD-CWE-noinfo
Published Date Nov 02, 2020
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
2.97%

Vulnerability Summary

CVE-2020-5656: Improper access control vulnerability in TCP/IP function included in the firmware of MELSEC iQ-R series (RJ71EIP91 EtherNet/IP Network Interface Module First 2 digits of serial number are '02' or before, RJ71PN92 PROFINET IO Controller Module First 2 digits of serial number are '01' or before, RD81DL96 High Speed Data Logger Module First 2 digits of serial number are '08' or before, RD81MES96N MES Interface Module First 2 digits of serial number are '04' or before, and RD81OPC96 OPC UA Server Module First 2 digits of serial number are '04' or before) allows a remote unauthenticated attacker to stop the network functions of the products or execute a malicious program via a specially crafted packet.

Impacted Vendors

M
mitsubishielectric 5

Reference Links

https://jvn.jp/vu/JVNVU92513419/index.html https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-012.pdf https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-012_en.pdf https://jvn.jp/vu/JVNVU92513419/index.html https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-012.pdf https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-012_en.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-2020-5656 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

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.