CVE-2021-20595: XEE
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.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2021-20595.
What is the severity of CVE-2021-20595?
The severity of CVE-2021-20595 is high with a CVSS score of 8.2.
Which software versions are affected by CVE-2021-20595?
The affected software versions are 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, and GB-50ADA-J Ver.3.20 and prior.
How does CVE-2021-20595 impact Mitsubishi Electric Air Conditioning System/Centralized Controllers?
CVE-2021-20595 allows attackers to exploit an XML External Entity (XXE) vulnerability in the affected software.
Is there a fix available for CVE-2021-20595?
Yes, Mitsubishi Electric has released a security advisory with mitigation measures for CVE-2021-20595. Please refer to the vendor's advisory for more information.