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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
mz automation:libiec61850
References 8
https://github.com/mz-automation/libiec61850/commit/a96bd674e0238276dd1387d31d5…
cna@vuldb.com
https://github.com/mz-automation/libiec61850/issues/598
cna@vuldb.com
https://github.com/mz-automation/libiec61850/issues/598#issuecomment-4858659113
cna@vuldb.com
https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2
cna@vuldb.com
https://vuldb.com/cve/CVE-2026-19206
cna@vuldb.com
https://vuldb.com/submit/864840
cna@vuldb.com
https://vuldb.com/vuln/386950
cna@vuldb.com
https://vuldb.com/vuln/386950/cti
cna@vuldb.com