CVEvulnerability

CVE-2021-20593

7.1 HIGH Published 2021-07-13 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-07-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CVSS 2.0 ([email protected])
5.5 MEDIUM — AV:N/AC:L/Au:S/C:P/I:P/A:N
Weaknesses
CWE-287

Description

Incorrect Implementation of Authentication Algorithm in Mitsubishi Electric Air Conditioning System/Centralized Controllers (G-50A Ver.2.50 to Ver. 3.35, GB-50A Ver.2.50 to Ver. 3.35, 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) and Air Conditioning System/Expansion Controllers (PAC-YG50ECA Ver.2.20 and prior) allows a remote authenticated attacker to impersonate administrators to disclose configuration information of the air conditioning system and tamper information (e.g. operation information and configuration of air conditioning system) by exploiting this vulnerability.

Affected configurations

• mitsubishi g-50a firmware (>= 2.50 <= 3.35) • mitsubishi gb-50a firmware (>= 2.50 <= 3.35) • mitsubishi ag-150a-a firmware (<= 3.20) • mitsubishi ag-150a-j firmware (<= 3.20) • mitsubishi gb-50ada-a firmware (<= 3.20) • mitsubishi gb-50ada-j firmware (<= 3.20) • mitsubishi eb-50gu-a firmware (<= 7.09) • mitsubishi eb-50gu-j firmware (<= 7.09) • 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 ew-50a firmware (<= 7.93) • mitsubishi ew-50e firmware (<= 7.93) • mitsubishi te-200a firmware (<= 7.93) • mitsubishi te-50a firmware (<= 7.93) • mitsubishi tw-50a firmware (<= 7.93) • mitsubishi cms-rmd-j firmware (<= 1.30) • mitsubishi pac-yg50eca firmware (<= 2.20)

Related

Weakness · CWE (1)

  • CWE-287 Improper Authentication weakness

References