CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
ACTIVE
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/SC:N/VI:H/SI:N/VA:H/SA:N
AI Score
Confidence
High
EPSS
Percentile
55.6%
Successful exploitation of these vulnerabilities could cause a buffer overflow condition and allow remote code execution.
The following versions of Delta Electronics CNCSoft-G2, a Human-Machine Interface (HMI) software, are affected:
Delta Electronics CNCSoft-G2 lacks proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. If a target visits a malicious page or opens a malicious file an attacker can leverage this vulnerability to execute code in the context of the current process.
CVE-2024-39880 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2024-39880. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
Delta Electronics CNCSoft-G2 lacks proper validation of user-supplied data, which can result in a memory corruption condition. If a target visits a malicious page or opens a malicious file an attacker can leverage this vulnerability to execute code in the context of the current process.
CVE-2024-39881 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2024-39881. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
Delta Electronics CNCSoft-G2 lacks proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. If a target visits a malicious page or opens a malicious file an attacker can leverage this vulnerability to execute code in the context of the current process.
CVE-2024-39882 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2024-39882. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
Delta Electronics CNCSoft-G2 lacks proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. If a target visits a malicious page or opens a malicious file an attacker can leverage this vulnerability to execute code in the context of the current process.
CVE-2024-39883 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2024-39883. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
Bobby Gould, Fritz Sands, and Natnael Samson working with Trend Micro Zero Day Initiative reported these vulnerabilities to CISA.
Delta Electronics recommends users update to CNCSoft-G2 V2.1.0.10 or later.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:
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/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.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
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 suspected malicious activity should follow established internal procedures and report 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 exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39880
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39880
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39881
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39881
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39882
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39882
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39883
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39883
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-advisories/icsa-24-191-01
cwe.mitre.org/data/definitions/121.html
cwe.mitre.org/data/definitions/122.html
cwe.mitre.org/data/definitions/125.html
cwe.mitre.org/data/definitions/787.html
downloadcenter.deltaww.com/en-US/DownloadCenter?v=1&q=cncsoft&sort_expr=cdate&sort_dir=DESC
github.com/cisagov/CSAF
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
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us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.cisa.gov/resources-tools/resources/ics-recommended-practices
www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
www.cisa.gov/topics/industrial-control-systems
www.cisa.gov/topics/industrial-control-systems
www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.cisa.gov/uscert/ncas/tips/ST04-014
www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf
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CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
ACTIVE
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/SC:N/VI:H/SI:N/VA:H/SA:N
AI Score
Confidence
High
EPSS
Percentile
55.6%