Vulnerability Report

CVE-2021-20600

Title: Denial of Service in Mitsubishi Electric MELSEC iQ-R series C Controller Module

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2021-20600.

CWE Category CWE-400
Published Date Oct 08, 2021
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 5.9 CVSS v3.1
Exploit Probability (EPSS)
2.38%

Vulnerability Summary

CVE-2021-20600: Uncontrolled resource consumption in Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery.

Impacted Vendors

M
mitsubishielectric 1

Reference Links

https://jvn.jp/vu/JVNVU94914666/index.html https://us-cert.cisa.gov/ics/advisories/icsa-21-280-04 https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-015_en.pdf https://jvn.jp/vu/JVNVU94914666/index.html https://us-cert.cisa.gov/ics/advisories/icsa-21-280-04 https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-015_en.pdf
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.9
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.1
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:N/I:N/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-20600 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 HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.