CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
95.7%
Successful exploitation of this vulnerability could allow an attacker to remotely take control of the product.
Hitachi ABB Power Grids reports the vulnerability affects the following XMC20 Multiservice-Multiplexer products:
A vulnerability exists in a specific library included in these products. An attacker could exploit the vulnerability by sending a specially crafted message to the XMC20 node to open a communication channel without first performing authentication, resulting in unauthorized access.
CVE-2018-10933 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
Hitachi ABB Power Grids reported this vulnerability to CISA.
Hitachi ABB Power Grids has corrected the problem in the following product versions and recommends users apply the firmware update at the earliest availability:
For additional information and support please contact a product provider or a Hitachi ABB Power Grids service organization.
Hitachi ABB Power Grids published cybersecurity advisory PGVU-PGGA-XMC20-2020034 to give users more information about this issue.
Hitachi ABB Power Grids recommends the following cybersecurity practices:
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 us-cert.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 us-cert.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.
No known public exploits specifically target this vulnerability.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-10933
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-advisories/icsa-20-294-02
cwe.mitre.org/data/definitions/287.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
search.abb.com/library/Download.aspx?DocumentID=9AKK107991A2862&LanguageCode=en&DocumentPartId=&Action=Launch
twitter.com/CISAgov
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www.dhs.gov/performance-financial-reports
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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:H/I:H/A:N
www.hitachiabb-powergrids.com/contact-us/
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www.oig.dhs.gov/
www.us-cert.cisa.gov/ics
www.us-cert.cisa.gov/ics
www.us-cert.cisa.gov/ics/recommended-practices
www.us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Hitachi%20ABB%20Power%20Grids%20XMC20%20Multiservice-Multiplexer&body=www.cisa.gov/news-events/ics-advisories/icsa-20-294-02
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
95.7%