CVE-2026-50039: CWE-121 Stack-based buffer overflow in MZ Automation libIEC61850
The affected product is vulnerable to a stack-based buffer overflow, which may allow an attacker to cause a memory corruption via a Read Request.
AI Analysis
Technical Summary
CVE-2026-50039 is a stack-based buffer overflow vulnerability (CWE-121) in MZ Automation's libIEC61850 library version 1.0.0. The vulnerability can be exploited through a crafted Read Request, leading to memory corruption. The CVSS 3.1 base score is 7.5, indicating high severity due to network attack vector, low attack complexity, no privileges required, no user interaction, and an impact limited to availability (denial of service). No vendor advisory or patch information is currently available, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation of this vulnerability may cause memory corruption resulting in denial of service (application crash or instability). There is no indication of confidentiality or integrity impact. The vulnerability can be exploited remotely without authentication or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting exposure of libIEC61850 services to untrusted networks and monitor for unusual crashes or instability related to Read Requests.
CVE-2026-50039: CWE-121 Stack-based buffer overflow in MZ Automation libIEC61850
Description
The affected product is vulnerable to a stack-based buffer overflow, which may allow an attacker to cause a memory corruption via a Read Request.
CVSS v3.1
Score 7.5high
Affected software
pkg:github/mzautomation/libIEC61850Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-50039 is a stack-based buffer overflow vulnerability (CWE-121) in MZ Automation's libIEC61850 library version 1.0.0. The vulnerability can be exploited through a crafted Read Request, leading to memory corruption. The CVSS 3.1 base score is 7.5, indicating high severity due to network attack vector, low attack complexity, no privileges required, no user interaction, and an impact limited to availability (denial of service). No vendor advisory or patch information is currently available, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation of this vulnerability may cause memory corruption resulting in denial of service (application crash or instability). There is no indication of confidentiality or integrity impact. The vulnerability can be exploited remotely without authentication or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting exposure of libIEC61850 services to untrusted networks and monitor for unusual crashes or instability related to Read Requests.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- icscert
- Date Reserved
- 2026-06-09T20:01:29.564Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a62806b9c2644c7f8b34bb0
Added to database: 07/23/2026, 20:58:19 UTC
Last enriched: 07/30/2026, 23:02:11 UTC
Last updated: 09/05/2026, 22:52:11 UTC
Views: 135
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