CVE-2021-20595

HIGH

Mitsubishi Electric Air Conditioning Systems - XML External Entity Injection

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Third Party Advisory x_refsource_misc
https://jvn.jp/vu/JVNVU93086468/index.html

Scores

CVSS v3 8.2
EPSS 0.0178
EPSS Percentile 75.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Details

CWE
CWE-611
Status published
Products (19)
mitsubishi/ae-200a_firmware < 7.93
mitsubishi/ae-200e_firmware < 7.93
mitsubishi/ae-50a_firmware < 7.93
mitsubishi/ae-50e_firmware < 7.93
mitsubishi/ag-150a-a_firmware < 3.20
mitsubishi/ag-150a-j_firmware < 3.20
mitsubishi/cms-rmd-j_firmware < 1.30
mitsubishi/eb-50gu-a_firmware < 7.09
mitsubishi/eb-50gu-j_firmware < 7.09
mitsubishi/ew-50a_firmware < 7.93
... and 9 more
Published Jul 13, 2021
Tracked Since Feb 18, 2026