Risk | High |
Patch available | NO |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-20599 |
CWE-ID | CWE-639 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
MELSEC iQ-R 08 SFCPU Hardware solutions / Firmware MELSEC iQ-R 16 SFCPU Hardware solutions / Firmware MELSEC iQ-R 32 SFCPU Hardware solutions / Firmware MELSEC iQ-R 120 SFCPU Hardware solutions / Firmware MELSEC iQ-R 08 PSFCPU Hardware solutions / Firmware MELSEC iQ-R 16 PSFCPU Hardware solutions / Firmware MELSEC iQ-R 32 PSFCPU Hardware solutions / Firmware MELSEC iQ-R 120 PSFCPU Hardware solutions / Firmware |
Vendor | Mitsubishi Electric |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU57377
Risk: High
CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:U/RC:C]
CVE-ID: CVE-2021-20599
CWE-ID:
CWE-639 - Authorization Bypass Through User-Controlled Key
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the target system.
The vulnerability exist due to insufficient access authorization. A remote attacker can log in to the CPU module by obtaining credentials other than password.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsMELSEC iQ-R 08 SFCPU: All versions
MELSEC iQ-R 16 SFCPU: All versions
MELSEC iQ-R 32 SFCPU: All versions
MELSEC iQ-R 120 SFCPU: All versions
MELSEC iQ-R 08 PSFCPU: All versions
MELSEC iQ-R 16 PSFCPU: All versions
MELSEC iQ-R 32 PSFCPU: All versions
MELSEC iQ-R 120 PSFCPU: All versions
External linkshttp://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-011_en.pdf
http://us-cert.cisa.gov/ics/advisories/icsa-21-287-03
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.