CVE-2021-20593 describes an authentication bypass vulnerability in various Mitsubishi Electric Air Conditioning System/Centralized and Expansion Controllers. A remote authenticated attacker can exploit this flaw to impersonate administrators, gaining unauthorized access to disclose configuration information and tamper with operational settings. With a CVSS score of 7.1 (HIGH), the vulnerability is easily exploitable over the network with low privileges, leading to high integrity impact but no availability impact. While there is no known active exploitation or public exploit code, the vulnerability has received some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.50, <= 3.35CPE matchmatch criteria | cpe:2.3:o:mitsubishi:g-50a_firmware:*:*:*:*:*:*:*:* | ||
>= 2.50, <= 3.35CPE matchmatch criteria | cpe:2.3:o:mitsubishi:gb-50a_firmware:*:*:*:*:*:*:*:* | ||
<= 3.20CPE matchmatch criteria | cpe:2.3:o:mitsubishi:ag-150a-a_firmware:*:*:*:*:*:*:*:* | ||
<= 3.20CPE matchmatch criteria | cpe:2.3:o:mitsubishi:ag-150a-j_firmware:*:*:*:*:*:*:*:* | ||
<= 3.20CPE matchmatch criteria | cpe:2.3:o:mitsubishi:gb-50ada-a_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.