---
title: "Critical Buffer Overflow Flaw in Delta Electronics ASDA-Soft Threatens Manufacturing"
short_title: "Critical flaw in Delta ASDA-Soft risks manufacturing"
description: "Delta Electronics ASDA-Soft versions ≤7.2.0.0 vulnerable to stack-based buffer overflow (CVE-2026-1361). Patch now to prevent SEH corruption and system compromise."
author: "Vitus"
date: 2024-10-02
categories: [Cybersecurity, Vulnerabilities]
tags: [delta-electronics, cve-2026-1361, buffer-overflow, ics-security, manufacturing]
score: 0.78
cve_ids: [CVE-2026-1361]
---
TL;DR
A critical stack-based buffer overflow vulnerability (CVE-2026-1361) in Delta Electronics ASDA-Soft versions 7.2.0.0 and earlier could allow attackers to corrupt structured exception handlers (SEH) and execute arbitrary code. The flaw stems from improper validation of user-controlled parameters in `.par` files. Delta has released a patch (v7.2.2.0), and users are urged to update immediately to mitigate risks to critical manufacturing systems.
---
Main Content
Critical Vulnerability Discovered in Delta Electronics ASDA-Soft
Delta Electronics, a global leader in industrial automation, has disclosed a high-severity stack-based buffer overflow vulnerability in its ASDA-Soft software. Tracked as CVE-2026-1361 (CVSS 7.8), the flaw affects versions 7.2.0.0 and earlier and could enable attackers to overwrite stack-allocated buffers, leading to structured exception handler (SEH) corruption and potential arbitrary code execution. The vulnerability poses a significant risk to critical manufacturing sectors worldwide, where ASDA-Soft is widely deployed for motion control and automation tasks.
---
Key Points
- Vulnerability: Stack-based buffer overflow (CVE-2026-1361) in Delta Electronics ASDA-Soft ≤7.2.0.0.
- Root Cause: Improper validation of a user-controlled size parameter in `.par` files, allowing data to be written beyond buffer limits.
- Impact: SEH corruption, potential arbitrary code execution, and compromise of industrial control systems (ICS).
- Affected Sectors: Critical manufacturing, with global deployment in Taiwan, North America, Europe, and Asia.
- Mitigation: Delta has released ASDA-Soft v7.2.2.0 to patch the flaw. Users must update immediately and follow recommended cybersecurity practices.
---
Technical Details
The vulnerability resides in ASDA-Soft’s parsing mechanism for `.par` files, a proprietary format used for configuration and automation tasks. Specifically, the software fails to properly validate a user-supplied size parameter, which is checked against the upper limits of a local buffer incorrectly. This oversight allows attackers to craft malicious `.par` files that overwrite adjacent memory, corrupting the structured exception handler (SEH) and enabling arbitrary code execution.
#### CWE Classification
The flaw is classified under [CWE-121: Stack-based Buffer Overflow](https://cwe.mitre.org/data/definitions/121.html), a common but dangerous vulnerability that occurs when a program writes more data to a buffer than it can hold, leading to memory corruption.
#### CVSS Metrics
| Metric | Value |
|-----------------------|---------------------------------------------------------------------------|
| CVSS Version | 3.1 |
| Base Score | 7.8 (High) |
| Vector String | [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) |
| Attack Vector | Local (requires user interaction, e.g., opening a malicious `.par` file) |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity | High |
| Availability | High |
---
Impact Assessment
#### Potential Consequences
- Arbitrary Code Execution: Attackers could exploit the vulnerability to execute malicious code on affected systems, potentially gaining full control over industrial processes.
- System Compromise: Corruption of the SEH could lead to crashes, data leakage, or unauthorized access to sensitive manufacturing data.
- Operational Disruption: Compromised ASDA-Soft instances could disrupt production lines, leading to downtime, financial losses, and safety risks in critical manufacturing environments.
#### Affected Systems
- Product: Delta Electronics ASDA-Soft (all versions ≤7.2.0.0).
- Sector: Critical manufacturing, including automotive, electronics, and industrial automation.
- Deployment: Worldwide, with significant usage in Taiwan, North America, Europe, and Asia.
---
Mitigation Steps
Delta Electronics has released a patched version of ASDA-Soft (v7.2.2.0) to address CVE-2026-1361. Users are strongly advised to take the following actions:
#### Immediate Actions
1. Update ASDA-Soft: Download and install v7.2.2.0 from Delta’s official [Download Center](https://downloadcenter.deltaww.com/en-US/DownloadCenter?v=1&q=asda-soft&sort_expr=cdate&sort_dir=DESC).
2. Review Advisory: Consult Delta’s official advisory (Delta-PCSA-2026-00003) for detailed guidance: [Delta Cybersecurity Advisory](https://www.deltaww.com/en-US/service-support/product-cybersecurity/advisory).
#### Defensive Measures
- Avoid Untrusted Files: Do not open `.par` files or other attachments from untrusted sources.
- Network Segmentation: Isolate control systems and industrial equipment from business networks using firewalls.
- Secure Remote Access: Use VPNs or other secure methods for remote access to industrial systems.
- Monitor for Exploitation: Implement intrusion detection systems (IDS) to monitor for signs of malicious activity.
#### Vendor Recommendations
Delta Electronics emphasizes the importance of proactive cybersecurity practices, including:
- Regularly updating software and firmware.
- Restricting physical and network access to industrial control systems.
- Training employees to recognize phishing attempts and suspicious files.
---
Conclusion
The discovery of CVE-2026-1361 underscores the ongoing risks faced by industrial control systems (ICS) and critical manufacturing sectors. While the vulnerability requires local access and user interaction, its potential impact—arbitrary code execution and system compromise—makes it a high-priority threat for organizations using Delta Electronics ASDA-Soft.
Users must patch immediately and adhere to defensive best practices to mitigate risks. As industrial environments increasingly become targets for cyberattacks, proactive measures such as network segmentation, secure remote access, and continuous monitoring are essential to safeguarding critical infrastructure.
For further guidance, organizations can refer to CISA’s recommended practices for ICS security: [CISA ICS Best Practices](https://www.cisa.gov/ics).
---
References
[^1]: CISA. "[ICSA-26-048-02 Delta Electronics ASDA-Soft](https://www.cisa.gov/news-events/ics-advisories/icsa-26-048-02)". Retrieved 2024-10-02.
[^2]: Delta Electronics. "[Delta-PCSA-2026-00003 Advisory](https://www.deltaww.com/en-US/service-support/product-cybersecurity/advisory)". Retrieved 2024-10-02.
[^3]: MITRE. "[CWE-121: Stack-based Buffer Overflow](https://cwe.mitre.org/data/definitions/121.html)". Retrieved 2024-10-02.
[^4]: NIST. "[CVE-2026-1361 Detail](https://www.cve.org/CVERecord?id=CVE-2026-1361)". Retrieved 2024-10-02.