CVE-2026-19206
MZ Automation libiec61850 ASDU Element sv_subscriber.c SVReceiver_stopThreadless heap-based overflow
- State
- Published
- Severity
- 4.8 Medium
- Published
- Aug 7, 2026
- Updated
- Aug 7, 2026
- Reserved
- Aug 7, 2026
Description
A security flaw has been discovered in MZ Automation libiec61850 up to 1.6.1. This affects the function SVReceiver_stopThreadless of the file src/sampled_values/sv_subscriber.c of the component ASDU Element Handler. Performing a manipulation results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to mitigate this issue. The patch is named a96bd674e0238276dd1387d31d52e55229d0771e. The affected component should be upgraded.
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-386950 | MZ Automation libiec61850 ASDU Element sv_subscriber.c SVReceiver_stopThreadless heap-based overflowvdb-entrytechnical-description
- VDB-386950 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-19206 | CVE Analysis and Reportthird-party-advisory
- Submit #864840 | MZ Automation libiec61850 1.6.1 Memory Corruption (heap-buffer-overflow)third-party-advisory
- https://github.com/mz-automation/libiec61850/issues/598exploitissue-tracking
- https://github.com/mz-automation/libiec61850/issues/598#issuecomment-4858659113issue-tracking
- https://github.com/mz-automation/libiec61850/commit/a96bd674e0238276dd1387d31d52e55229d0771epatch
- https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2patch
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.