CVE-2026-18583
mz-automation libiec61850 MMS Request mms_mapping.c checkDataSetAccess out-of-bounds
- State
- Published
- Severity
- 6.9 Medium
- Published
- Aug 3, 2026
- Updated
- Aug 3, 2026
- Reserved
- Aug 2, 2026
Description
A weakness has been identified in mz-automation libiec61850 up to 1.6.1. This issue affects the function checkDataSetAccess of the file src/iec61850/server/mms_mapping/mms_mapping.c of the component MMS Request Handler. This manipulation causes out-of-bounds read. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 1.6.2 is capable of addressing this issue. Patch name: 062062daf4cb50c7aa76e01d6fb4d58fc9278a7d. Upgrading the affected component is recommended. The vendor was contacted early about this disclosure.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| 3.0 | 5.3 Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 5.0 Medium | AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
libiec61850mz-automation |
|
References
- VDB-385412 | mz-automation libiec61850 MMS Request mms_mapping.c checkDataSetAccess out-of-boundsvdb-entrytechnical-description
- VDB-385412 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-18583 | CVE Analysis and Reportthird-party-advisory
- Submit #844921 | MZ Automation GmbH libiec61850 1.6.1 Out-of-bounds Readthird-party-advisory
- https://github.com/mz-automation/libiec61850/security/advisories/GHSA-7v2x-39mw-2979related
- https://github.com/gff-cw/information/issues/3exploitissue-tracking
- https://github.com/mz-automation/libiec61850/commit/062062daf4cb50c7aa76e01d6fb4d58fc9278a7dpatch
- https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2patch
- https://github.com/mz-automation/libiec61850/product
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