Delta Electronics ASDA-Soft

Summary

CVE-2026-5726, a stack-based buffer overflow in Delta Electronics ASDA-Soft versions up to 7.2.2.0, allows local attackers to execute arbitrary code by sending malformed .par files. The vulnerability affects critical manufacturing infrastructure worldwide and carries a CVSS score of 7.8 (HIGH). Delta has released version 7.2.6.0 as a patch; no active exploitation has been reported to CISA.

Full text

ICS Advisory Delta Electronics ASDA-Soft Release DateApril 16, 2026 Alert CodeICSA-26-106-01 Related topics: Industrial Control System Vulnerabilities, Industrial Control Systems View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code. The following versions of Delta Electronics ASDA-Soft are affected: ASDA-Soft <=V7.2.2.0 CVSS Vendor Equipment Vulnerabilities v3 7.8 Delta Electronics Delta Electronics ASDA-Soft Stack-based Buffer Overflow Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Taiwan Vulnerabilities Expand All + CVE-2026-5726 A stack-based buffer overflow vulnerability is triggered in ASDA-Soft version 7.2.0.0 during the parsing of malformed .par files. View CVE Details Affected Products Delta Electronics ASDA-Soft Vendor:Delta Electronics Product Version:Delta Electronics ASDA-Soft: <=V7.2.2.0 Product Status:known_affected Remediations Vendor fixDelta Electronics recommends users download and upgrade ASDA-Soft to v7.2.6.0 or later. If you have any product-related support concerns, contact Delta via the portal page at https://www.deltaww.com/en-US/service-support/contact-us?type=1 for any information or materials you may require.https://www.deltaww.com/en-US/service-support/contact-us?type=1 MitigationDelta Electronics provides the following general recommendations: Do not click on untrusted internet links or open unsolicited attachments in emails. Avoid exposing control systems and equipment to the Internet. Place control system networks and remote devices behind firewalls, and isolate them from the business network. When remote access is required, use a secure access method, such as a virtual private network (VPN). MitigationFor more information, see Delta Electronics advisory Delta-PCSA-2026-00007 athttps://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2026-00007_ASDA-Soft%20Stack-based%20Buffer%20Overflow%20Vulnerability%20(CVE-2026-5726).pdfhttps://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2026-00007_ASDA-Soft%20Stack-based%20Buffer%20Overflow%20Vulnerability%20(CVE-2026-5726).pdf Relevant CWE: CWE-121 Stack-based Buffer Overflow Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Acknowledgments Feng Xiong of TrendAI Zero Day Initiative reported this vulnerability to CISA Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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: Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely. Revision History Initial Release Date: 2026-04-16 Date Revision Summary 2026-04-16 1 Initial Publication Legal Notice and Terms of Use This product is provided subject to this Notification and this Privacy & Use policy. Vendor Delta Electronics Tags Sector: Critical Manufacturing Sector Topics: Industrial Control System Vulnerabilities, Industrial Control Systems Please share your thoughts We recently updated our anonymous product survey; we welcome your feedback. Related Advisories Apr 16, 2026 ICS Advisory | ICSA-26-106-04 AVEVA Pipeline Simulation Apr 16, 2026 ICS Advisory | ICSA-26-106-03 Anviz Multiple Products Apr 16, 2026 ICS Advisory | ICSA-26-106-02 Horner Automation Cscape and XL4, XL7 PLC Apr 09, 2026 ICS Advisory | ICSA-26-099-02 GPL Odorizers GPL750

Indicators of Compromise

• cve — CVE-2026-5726

Entities