Vulnerability Report

CVE-2021-20599

Title: Mitsubishielectric R08Psfcpu Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2021-20599.

CWE Category CWE-639
Published Date Oct 14, 2021
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 9.1 CVSS v3.1
Exploit Probability (EPSS)
1.40%

Vulnerability Summary

CVE-2021-20599: Cleartext Transmission of Sensitive InformationCleartext transmission of sensitive information vulnerability in MELSEC iQ-R series Safety CPU R08/16/32/120SFCPU firmware versions "26" and prior and MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU firmware versions "11" and prior allows a remote unauthenticated attacker to login to a target CPU module by obtaining credentials other than password.

Impacted Vendors

M
mitsubishielectric 8

Reference Links

https://jvn.jp/vu/JVNVU98578731 https://www.cisa.gov/uscert/ics/advisories/icsa-21-287-03 https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-011_en.pdf https://jvn.jp/vu/JVNVU98578731 https://www.cisa.gov/uscert/ics/advisories/icsa-21-287-03 https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-011_en.pdf
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.1
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:N
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
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:N/A:N
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
5.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-20599 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:N

Affected Stack

No specific products linked.