8.2
HIGH
CVE-2021-20595
Mitsubishi Electric XML External Entity Reference Vulnerability
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.

INFO

Published Date :

July 13, 2021, 11:15 a.m.

Last Modified :

Nov. 21, 2024, 5:46 a.m.

Remotely Exploitable :

Yes !

Impact Score :

4.2

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-20595 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mitsubishi ae-200a_firmware
2 Mitsubishi ae-200e_firmware
3 Mitsubishi ae-50a_firmware
4 Mitsubishi ae-50e_firmware
5 Mitsubishi ag-150a-a_firmware
6 Mitsubishi ag-150a-j_firmware
7 Mitsubishi eb-50gu-a_firmware
8 Mitsubishi eb-50gu-j_firmware
9 Mitsubishi ew-50a_firmware
10 Mitsubishi ew-50e_firmware
11 Mitsubishi gb-50a_firmware
12 Mitsubishi gb-50ada-a_firmware
13 Mitsubishi gb-50ada-j_firmware
14 Mitsubishi te-200a_firmware
15 Mitsubishi te-50a_firmware
16 Mitsubishi tw-50a_firmware
17 Mitsubishi g-50a_firmware
18 Mitsubishi cms-rmd-j_firmware
19 Mitsubishi pac-yg50eca_firmware
20 Mitsubishi g-50a
21 Mitsubishi gb-50a
22 Mitsubishi ag-150a-a
23 Mitsubishi ag-150a-j
24 Mitsubishi gb-50ada-a
25 Mitsubishi gb-50ada-j
26 Mitsubishi eb-50gu-a
27 Mitsubishi eb-50gu-j
28 Mitsubishi ae-200a
29 Mitsubishi ae-200e
30 Mitsubishi ae-50a
31 Mitsubishi ae-50e
32 Mitsubishi ew-50a
33 Mitsubishi ew-50e
34 Mitsubishi te-200a
35 Mitsubishi te-50a
36 Mitsubishi tw-50a
37 Mitsubishi cms-rmd-j
38 Mitsubishi pac-yg50eca
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-20595.

URL Resource
https://jvn.jp/vu/JVNVU93086468/index.html Third Party Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-005_en.pdf Vendor Advisory
https://jvn.jp/vu/JVNVU93086468/index.html Third Party Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-005_en.pdf Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-20595 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-20595 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://jvn.jp/vu/JVNVU93086468/index.html
    Added Reference https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-005_en.pdf
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Aug. 04, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:C)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
    Changed Reference Type https://jvn.jp/vu/JVNVU93086468/index.html No Types Assigned https://jvn.jp/vu/JVNVU93086468/index.html Third Party Advisory
    Changed Reference Type https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-005_en.pdf No Types Assigned https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-005_en.pdf Vendor Advisory
    Added CWE NIST CWE-611
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:g-50a_firmware:*:*:*:*:*:*:*:* versions from (including) 2.50 up to (including) 3.35 OR cpe:2.3:h:mitsubishi:g-50a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:gb-50a_firmware:*:*:*:*:*:*:*:* versions from (including) 2.50 up to (including) 3.35 OR cpe:2.3:h:mitsubishi:gb-50a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:ag-150a-a_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.20 OR cpe:2.3:h:mitsubishi:ag-150a-a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:ag-150a-j_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.20 OR cpe:2.3:h:mitsubishi:ag-150a-j:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:gb-50ada-a_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.20 OR cpe:2.3:h:mitsubishi:gb-50ada-a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:gb-50ada-j_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.20 OR cpe:2.3:h:mitsubishi:gb-50ada-j:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:eb-50gu-a_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.09 OR cpe:2.3:h:mitsubishi:eb-50gu-a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:eb-50gu-j_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.09 OR cpe:2.3:h:mitsubishi:eb-50gu-j:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:ae-200a_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ae-200a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:ae-200e_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ae-200e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:ae-50a_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ae-50a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:ae-50e_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ae-50e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:ew-50a_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ew-50a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:ew-50e_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ew-50e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:te-200a_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:te-200a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:te-50a_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:te-50a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:tw-50a_firmware:*:*:*:*:*:*:*:* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:tw-50a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:cms-rmd-j_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.30 OR cpe:2.3:h:mitsubishi:cms-rmd-j:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishi:pac-yg50eca_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.20 OR cpe:2.3:h:mitsubishi:pac-yg50eca:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-20595 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-20595 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.20 }} -0.03%

score

0.57924

percentile

CVSS31 - Vulnerability Scoring System
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