7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
0.001 Low
EPSS
Percentile
47.2%
Successful exploitation of this vulnerability could allow an attacker to gain unauthorized access to a robot controller.
Mitsubishi Electric reports this vulnerability affects the following Robot Controllers:
Note: The affected firmware version depends on the model name; see Mitsubishi Electricβs publication for the specific model names and controller types.
3.2.1 ACTIVE DEBUG CODE CWE-489
An authentication bypass vulnerability due to active debug code exists in Mitsubishi Electric MELFA SD/SQ series and F-series controllers for industrial robots. An attacker could gain unauthorized access to a robot controller by performing an unauthorized telnet login.
CVE-2022-33323 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).
Mitsubishi Electric reported this vulnerability to CISA.
Mitsubishi Electric released new firmware versions to address the issue. The fixed firmware version depends on the model name. Users should contact Mitsubishi Electric to obtain the latest firmware version:
Mitsubishi Electric recommends users take the following mitigation measures to minimize the risk of an attacker exploiting this vulnerability:
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 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 CISA products detailing cyber defense best 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-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report 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-2022-33323
cisa.gov/ics
cisa.gov/ics
cwe.mitre.org/data/definitions/489.html
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us-cert.cisa.gov/ics/Recommended-Practices
us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
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www.dhs.gov/foia
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www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-020_en.pdf
www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-020_en.pdf
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