CVE-2021-20595 Information

Description

Improper Restriction of XML External Entity Reference vulnerability in Mitsubishi Electric Air Conditioning System/Centralized Controllers (G-50A Ver.3.35 and prior GB-50A Ver.3.35 and prior GB-24A Ver.9.11 and prior AG-150A-A Ver.3.20 and prior AG-150A-J Ver.3.20 and prior GB-50ADA-A Ver.3.20 and prior GB-50ADA-J Ver.3.20 and prior EB-50GU-A Ver 7.09 and prior EB-50GU-J Ver 7.09 and prior AE-200A Ver 7.93 and prior AE-200E Ver 7.93 and prior AE-50A Ver 7.93 and prior AE-50E Ver 7.93 and prior EW-50A Ver 7.93 and prior EW-50E Ver 7.93 and prior TE-200A Ver 7.93 and prior TE-50A Ver 7.93 and prior TW-50A Ver 7.93 and prior CMS-RMD-J Ver.1.30 and prior) Air Conditioning System/Expansion Controllers (PAC-YG50ECA Ver.2.20 and prior) and Air Conditioning System/BM adapter(BAC-HD150 Ver.2.21 and prior) allows a remote unauthenticated attacker to disclose some of data in the air conditioning system or cause a DoS condition by sending specially crafted packets.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Reference

https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-005_en.pdf https://jvn.jp/vu/JVNVU93086468/index.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

HIGH

Base Severity

8.2