CVE-2026-19108
MZ Automation libiec61850 URCB Revalidation reporting.c deleteDataSetValuesShadowBuffer use after free
- State
- Published
- Severity
- 4.8 Medium
- Published
- Aug 6, 2026
- Updated
- Aug 8, 2026
- Reserved
- Aug 6, 2026
Description
A vulnerability was found in MZ Automation libiec61850 up to 1.6.1. The affected element is the function deleteDataSetValuesShadowBuffer of the file src/iec61850/server/mms_mapping/reporting.c of the component URCB Revalidation. The manipulation results in use after free. The attack needs to be approached locally. The exploit has been made public and could be used. Upgrading to version 1.6.2 is sufficient to fix this issue. The patch is identified as 486fd57f3aed65bb9d636ff00f9ddce2e450b168. Upgrading the affected component is advised.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | VulDB |
| 3.0 | 5.3 Medium | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 4.3 Medium | AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
libiec61850MZ Automation |
|
References
- VDB-386569 | MZ Automation libiec61850 URCB Revalidation reporting.c deleteDataSetValuesShadowBuffer use after freevdb-entrytechnical-description
- VDB-386569 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-19108 | CVE Analysis and Reportthird-party-advisory
- Submit #864520 | MZ Automation libiec61850 1.6.1 Memory Corruption(heap-use-after-free)third-party-advisory
- https://github.com/mz-automation/libiec61850/issues/596issue-tracking
- https://github.com/user-attachments/files/29163236/POC.zipexploit
- https://github.com/mz-automation/libiec61850/commit/486fd57f3aed65bb9d636ff00f9ddce2e450b168patch
- https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2patch
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