QID 590709

Date Published: 2022-07-18

QID 590709: Mitsubishi Electric Air Conditioning Systems Vulnerability (ICSA-21-182-05)

AFFECTED PRODUCTS
Mitsubishi Electric reports this vulnerability affects the following air conditioning systems:
Air Conditioning System/Centralized Controllers:


G-50A: Versions 3.35 and prior
GB-50A: Versions 3.35 and prior
GB-24A: Versions 9.11 and prior
AG-150A-A: Versions 3.20 and prior
AG-150A-J: Versions 3.20 and prior
GB-50ADA-A: Versions 3.20 and prior
GB-50ADA-J: Versions 3.20 and prior
EB-50GU-A: Versions 7.09 and prior
EB-50GU-J: Versions 7.09 and prior
AE-200A: Versions 7.93 and prior
AE-200E: Versions 7.93 and prior
AE-50A: Versions 7.93 and prior
AE-50E: Versions 7.93 and prior
EW-50A: Versions 7.93 and prior
EW-50E: Versions 7.93 and prior
TE-200A: Versions 7.93 and prior
TE-50A: Versions 7.93 and prior
TW-50A: Versions 7.93 and prior
CMS-RMD-J: Versions 1.30 and prior
Successful exploitation of this vulnerability may allow an attacker to disclose some of the data in the air conditioning system or cause a denial-of-service condition.

  • CVSS V3 rated as Critical - 8.2 severity.
  • CVSS V2 rated as Critical - 8.5 severity.
    • Solution

    Customers are advised to refer to CERT MITIGATIONS section ICSA-21-182-05 for affected packages and patching details.
    Air Conditioning System/Expansion Controllers:Workaround:

    Air Conditioning System/BM adapter:

    Vendor References

    CVEs related to QID 590709

    CVE-2021-20595 |
    Software Advisories
    Advisory ID Software Component Link
    ICSA-21-182-05 URL Logo www.us-cert.gov/ics/advisories/ICSA-21-182-05
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