9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
Low
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.061 Low
EPSS
Percentile
93.4%
Successful exploitation of these vulnerabilities could allow information to be disclosed, tampered with, or result in a denial-of-service condition.
Mitsubishi Electric reports these vulnerabilities affect the following versions of EcoWebServerIII, an energy saving data collecting server:
Multiple vulnerabilities due to cross-site scripting exist in Energy Saving Data Collecting Server (EcoWebServerIII), which may result in information disclosure or information tampering of the product.
CVE-2016-10735, CVE-2018-14040, CVE-2018-14042, CVE-2018-20676, CVE-2019-8331, CVE-2020-11022, and CVE-2020-11023 have been assigned to these vulnerabilities. A CVSS v3 base score of 6.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N ).
A vulnerability due to uncontrolled resource consumption exists in Energy Saving Data Collecting Server (EcoWebServerIII), which may result in a denial-of-service condition.
CVE-2017-18214 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated for; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
A vulnerability due to improperly controlled modification of dynamically determined object attributes exists in Energy Saving Data Collecting Server (EcoWebServerIII), which may result in a denial-of-service condition.
CVE-2020-7746 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated for; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Mitsubishi Electric reported these vulnerabilities to CISA.
Mitsubishi Electric recommends users update to the following versions to mitigate these vulnerabilities:
To update, users of the affected versions should refer to the user manual chapter “4.8.6 Version up of Main Program” (Setting). The manual and Setting Software for EcoWebServerIII are available to download on the MITSUBISHI ELECTRIC FA Global Website.
Mitsubishi Electric recommends users take the following mitigation measures to minimize the risk of exploiting these vulnerabilities:
For specific update instructions and additional details see the Mitsubishi Electric advisory.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
No known public exploits specifically target these vulnerabilities.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-10735
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-18214
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-14040
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-14042
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-20676
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-8331
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-11022
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-11023
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-7746
cwe.mitre.org/data/definitions/400.html
cwe.mitre.org/data/definitions/79.html
cwe.mitre.org/data/definitions/915.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Mitsubishi%20Electric%20EcoWebServerIII+https://www.cisa.gov/news-events/ics-advisories/icsa-22-055-02
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics/recommended-practices
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.cisa.gov/uscert/sites/default/files/publications/emailscams_0905.pdf
www.cisa.gov/uscert/sites/default/files/publications/emailscams_0905.pdf
www.cisa.gov/uscert/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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www.dhs.gov/foia
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-029_en.pdf
www.mitsubishielectric.com/fa
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-22-055-02
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mailto:?subject=Mitsubishi%20Electric%20EcoWebServerIII&body=www.cisa.gov/news-events/ics-advisories/icsa-22-055-02
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
Low
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.061 Low
EPSS
Percentile
93.4%