7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.9 High
AI Score
Confidence
High
0.009 Low
EPSS
Percentile
83.0%
Successful exploitation of this vulnerability could cause the functions provided by the WAC Router to stop.
Yokogawa reports this vulnerability affects the communication module for the following WAC Router:
If a WAC Router is subjected to a denial-of-service attack with malformed packets, the functions provided by the WAC Router may stop.
CVE-2022-32284 has been assigned to this vulnerability. A CVSS v3 base score of 5.9 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
Yokogawa reported this vulnerability to JPCERT/CC.
Yokogawa recommends updating to R13 or later. Please contact Yokogawa sales or service staff to update Vnet/IP firmware. Vnet/IP firmware cannot be updated by the user, and update charges are borne by the user.
Yokogawa recommends users establish and maintain a full security program, including patch updates, anti-virus, backup and recovery, zoning, hardening, whitelisting, firewalls, etc. Yokogawa can assist in setting up and running the security program continuously. For considering the most effective risk mitigation plan, as a starting point, Yokogawa can perform a security risk assessment.
Please see Yokogawa’s full report (YSAR-22-0005) for update details.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability these vulnerabilities. Specifically, users should:
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 at cisa.gov/ics. 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 at cisa.gov/ics 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. This vulnerability has a high attack complexity.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-32284
cwe.mitre.org/data/definitions/330.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
tmi.yokogawa.com/us/contact/
twitter.com/CISAgov
twitter.com/intent/tweet?text=Yokogawa%20Wide%20Area%20Communication%20Router+https://www.cisa.gov/news-events/ics-advisories/icsa-22-181-02
web-material3.yokogawa.com/1/32825/files/YSAR-22-0005-E.pdf
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
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/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-22-181-02&title=Yokogawa%20Wide%20Area%20Communication%20Router
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-22-181-02
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-22-181-02
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Yokogawa%20Wide%20Area%20Communication%20Router&body=www.cisa.gov/news-events/ics-advisories/icsa-22-181-02
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.9 High
AI Score
Confidence
High
0.009 Low
EPSS
Percentile
83.0%