PatchSiren cyber security CVE debrief

CVE-2024-39881 Delta Electronics CVE debrief

Delta Electronics CNCSoft-G2 contains a memory corruption vulnerability due to improper validation of user-supplied data. An attacker can exploit this flaw by convincing a target to visit a malicious web page or open a malicious file, resulting in arbitrary code execution within the context of the current process. The vulnerability affects CNCSoft-G2 version 2.0.0.5. CISA published the initial advisory on 2024-07-09, with an update on 2025-02-18 that added the fixed version information. Delta Electronics has released version 2.1.0.20 to address this issue.

Vendor: Delta Electronics
Product: CNCSoft-G2
CVSS: HIGH 7.8
CISA KEV: Not listed in stored evidence
Original CVE published: 2024-07-09
Original CVE updated: 2025-02-18
Advisory published: 2024-07-09
Advisory updated: 2025-02-18

Who should care

Organizations operating Delta Electronics CNCSoft-G2 in manufacturing, machining, or industrial automation environments. Security teams responsible for OT/ICS asset protection and patch management. Engineers and operators using CNCSoft-G2 for machine control and programming.

Technical summary

CVE-2024-39881 is a memory corruption vulnerability in Delta Electronics CNCSoft-G2 version 2.0.0.5 caused by insufficient validation of user-supplied data. The vulnerability can be triggered when a user opens a malicious file or visits a malicious web page, allowing an attacker to execute arbitrary code in the context of the current process. The CVSS 3.1 score is 7.8 (HIGH), indicating significant impact to confidentiality, integrity, and availability. Delta Electronics has released version 2.1.0.20 to remediate this vulnerability.

Defensive priority

HIGH

Recommended defensive actions

Update Delta Electronics CNCSoft-G2 to version 2.1.0.20 or later as soon as possible.
Apply vendor security advisory Delta-PCSA-2025-00002 for additional technical details.
Implement network segmentation to isolate CNCSoft-G2 installations from business networks and the Internet.
Block untrusted Internet links and unsolicited email attachments at the email gateway and endpoint level.
Use VPN for any required remote access to systems running CNCSoft-G2.
Review CISA ICS recommended practices for defense-in-depth strategies applicable to industrial control systems.

Evidence notes

CISA ICS Advisory ICSA-24-191-01 (Update A) documents this vulnerability in Delta Electronics CNCSoft-G2 version 2.0.0.5. The advisory was initially published 2024-07-09 and modified 2025-02-18 to include the fixed version. CVSS 3.1 score of 7.8 (HIGH) with vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Sources and references

Verified primary and authoritative sources

CVE-2024-39881 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2024-39881

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2024-39881 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2024-39881

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Source item URL
Unverified legacy reference

URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-191-01.json

cisa_csaf
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-191-01

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/topics/industrial-control-systems

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

Reference
Source reference
Unverified legacy reference

URL: https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B

Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.