CVE-2021-20595
8.2 · HIGHOverview
CVE-2021-20595 is a high-severity vulnerability affecting mitsubishi g-50a_firmware. It was published on July 13, 2021 and has a CVSS 3.1 base score of 8.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from mitsubishi. Update g-50a_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| mitsubishi | g-50a_firmware | 2.50 | Affected |
| mitsubishi | gb-50a_firmware | 2.50 | Affected |
| mitsubishi | ag-150a-a_firmware | 0 | Affected |
| mitsubishi | ag-150a-j_firmware | 0 | Affected |
| mitsubishi | gb-50ada-a_firmware | 0 | Affected |
| mitsubishi | gb-50ada-j_firmware | 0 | Affected |
| mitsubishi | eb-50gu-a_firmware | 0 | Affected |
| mitsubishi | eb-50gu-j_firmware | 0 | Affected |
| mitsubishi | ae-200a_firmware | 0 | Affected |
| mitsubishi | ae-200e_firmware | 0 | Affected |
Frequently Asked Questions
What is CVE-2021-20595?
CVE-2021-20595 is a high-severity vulnerability affecting mitsubishi g-50a_firmware. It was published on July 13, 2021 and has a CVSS 3.1 base score of 8.2 (HIGH).
How severe is CVE-2021-20595?
This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-20595?
Check the references section for vendor advisories and patches from mitsubishi. Update g-50a_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-20595?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-20595 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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