Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessUser downloads malicious file
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ExploitOpens file in ASDA-Soft application
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ExecutionStack buffer overflow triggered in parser
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ImpactArbitrary code execution with user privileges
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Stack buffer bounds checking
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Local attacker without privileges. Victim must open a crafted file or interact with malicious input processed by ASDA-Soft application. No network access required. Default ASDA-Soft installations vulnerable when processing untrusted files. |
| Impact | Real-world risk is elevated for targeted industrial environments despite requiring user interaction. The CVSS 7.8 High rating reflects complete system compromise potential (C:H/I:H/A:H) with low attack complexity (AC:L) and no privileges required (PR:N). The local attack vector (AV:L) and required user interaction (UI:R) constrain casual exploitation but align with common industrial attack patterns where adversaries use social engineering or supply chain compromise to deliver malicious project files to engineering workstations. No EPSS score provided, but KEV status is not confirmed, indicating no verified active exploitation campaigns. SSVC assessment favors attention: the vulnerability is automatable once weaponized (file parsing flaws enable reliable exploitation), technical impact is total system control in industrial engineering environments with potential operational technology (OT) network access, and exploitation via malicious project files is realistic in targeted attacks against manufacturing or critical infrastructure. Priority increases significantly for organizations using ASDA-Soft in production environments, especially where engineering workstations have network connectivity to operational systems. |
| Exploit ScenarioDerived | An attacker targeting an industrial facility crafts a malicious ASDA-Soft project file containing oversized data fields that trigger the stack buffer overflow when parsed. The attacker delivers this file via spear-phishing email to plant engineers or embeds it in compromised vendor documentation distributed through supply chain channels. When an engineer opens the malicious project file in ASDA-Soft to review servo drive configurations, the buffer overflow overwrites stack memory, redirecting execution to attacker-controlled shellcode that establishes persistence on the engineering workstation with full user privileges. From this foothold, the attacker can pivot to connected operational technology networks, exfiltrate proprietary manufacturing configurations, or manipulate servo drive parameters to disrupt production operations. |
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Alert meAnalysisAIv1 – Apr 08, 2026
Stack-based buffer overflow in Delta Electronics ASDA-Soft allows local attackers with no privileges to execute arbitrary code by tricking users into opening a malicious file. The vulnerability achieves complete system compromise (confidentiality, integrity, availability all rated High in CVSS) through user interaction with crafted input. No public exploit identified at time of analysis, though the low attack complexity and lack of required privileges increase realistic exploitation risk once details emerge.
RemediationAI
Consult the official Delta Electronics security advisory Delta-PCSA-2026-00007 available at https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2026-00007_ASDA-Soft%20Stack-based%20Buffer%20Overflow%20Vulnerability%20(CVE-2026-5726).pdf for specific patch versions and update instructions, as exact fix version is not confirmed from available data at time of analysis. Until patching is completed, implement defense-in-depth controls: restrict ASDA-Soft usage to isolated engineering workstations without direct operational technology network access, enforce strict policies against opening untrusted project files or configuration data, deploy application whitelisting to prevent unauthorized code execution, and consider file integrity monitoring on engineering systems. For critical environments, evaluate air-gapping engineering workstations or implementing jump hosts with file scanning capabilities to inspect project files before transfer to production systems.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
ASDA-Soft is Delta Electronics' industrial automation configuration software for ASDA servo drive systems, commonly deployed in manufacturing and industrial control environments. This vulnerability stems from CWE-121 (stack-based buffer overflow), where the application fails to properly validate the size of user-supplied input before copying it to a fixed-size stack buffer. When processing specially crafted files (likely project files or configuration data based on typical ASDA-Soft functionality), excessive data overwrites adjacent memory on the stack, potentially corrupting return addresses or function pointers to redirect program execution. The affected product is identified as cpe:2.3:a:deltaww:asda-soft, indicating Delta Electronics (deltaww) ASDA-Soft across unspecified versions, suggesting broad version impact pending specific vendor guidance.
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Severity by source
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionNVD
ASDA-Soft Stack-based Buffer Overflow Vulnerability
Zero Day Initiative Advisories
Executive ViewAI
CVE-2026-5726 is a high-severity stack buffer overflow in Delta Electronics ASDA-Soft that allows unprivileged local attackers to achieve complete system compromise through social engineering (malicious file delivery). This vulnerability poses significant risk to organizations using ASDA-Soft because it requires no authentication and can result in data theft, system manipulation, and operational disruption once exploit code becomes public.
No vendor-released patch identified at time of analysis. Interim mitigations: disable file-open functionality for untrusted users; implement application whitelisting to block unauthorized code execution; use OS-level execute protections (DEP/ASLR); restrict user access to ASDA-Soft to essential personnel only; monitor for suspicious file activity and process spawning from ASDA-Soft.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.
A stack-based buffer overflow in Delta Electronics ASDA-Soft, the configuration utility for ASDA series servo drives, al
Stack-based buffer overflow in Delta Electronics' ASDA-Soft servo commissioning software can be triggered when a user op
ASDA-Soft Stack-based Buffer Overflow Vulnerability [CVSS 7.8 HIGH]
ASDA-Soft: Version 5.4.1.0 and prior does not properly sanitize input while processing a specific project file, allowing
ASDA-Soft: Version 5.4.1.0 and prior does not properly sanitize input while processing a specific project file, allowing
EUVD-2026-20033
GHSA-3fvx-8h8j-fxvf
NVD
CVE.org
EPSS
Vulnrichment
Exploit-DB