CVE-2026-19259
MZ Automation libiec61850 MMS Protocol Workflow iec61850_common.c MmsMapping_varAccessSpecToObjectReference heap-based overflow
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
A vulnerability has been found in MZ Automation libiec61850 up to 1.6.1. The affected element is the function MmsMapping_varAccessSpecToObjectReference of the file src/iec61850/common/iec61850_common.c of the component MMS Protocol Workflow. Such manipulation of the argument GetNamedVariableListAttributesResponse.itemId leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
| CWE | CWE-122 CWE-119 |
| Vendor | mz automation |
| Product | libiec61850 |
| Published | Aug 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
MZ Automation / libiec61850
1.6.0 1.6.1
References
vuldb.com: https://vuldb.com/vuln/387009 vuldb.com: https://vuldb.com/vuln/387009/cti vuldb.com: https://vuldb.com/cve/CVE-2026-19259 vuldb.com: https://vuldb.com/submit/865176 github.com: https://github.com/mz-automation/libiec61850/issues/599 github.com: https://github.com/user-attachments/files/29190426/PoC.zip
Credits
Chuan Wei 🔍 SCU_1CP (VulDB User) SCU_1CP (VulDB User) VulDB CNA Team