CVE-2026-19206
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
A heap-based buffer overflow vulnerability was found in MZ Automation libiec61850 up to 1.6.1 in the function SVReceiver_stopThreadless of src/sampled_values/sv_subscriber.c. The attack must be initiated locally and the exploit is public. Version 1.6.2 mitigates the issue.
Risk Assessment
A local attacker could exploit the buffer overflow to execute code or cause a system crash.
Recommendation
Update libiec61850 to version 1.6.2 or later. Restrict local access to the system.
Other vulnerabilities in libiec61850
See all- CVE-2026-52134Critical
libiec61850 version 1.6 contains a vulnerability in the parseGoosePayload() function in /goose/goose_receiver.c, allowing attackers to bypass authentication via a captured GOOSE frame.
- CVE-2026-19259Medium
In the MZ Automation libiec61850 library up to version 1.6.1, a heap-based buffer overflow vulnerability was found in the MmsMapping_varAccessSpecToObjectReference function in src/iec61850/common/iec61850_common.c of the MMS Protocol Workflow component. Manipulating the GetNamedVariableListAttributesResponse.itemId argument leads to overflow. The attack requires local access, and the exploit is public.
- CVE-2026-19108Medium
Use-after-free vulnerability in MZ Automation libiec61850 up to 1.6.1, in the function deleteDataSetValuesShadowBuffer of the file src/iec61850/server/mms_mapping/reporting.c (URCB Revalidation component). The attack requires local access. The exploit has been made public. Upgrading to version 1.6.2 fixes the issue.
- CVE-2026-18583Medium
A weakness has been identified in mz-automation libiec61850 up to 1.6.1. The function checkDataSetAccess in src/iec61850/server/mms_mapping/mms_mapping.c causes an out-of-bounds read. The attack can be initiated remotely. The exploit has been made public.
- CVE-2024-36702High
A heap overflow vulnerability was discovered in libiec61850 version 1.5 in the BerEncoder_encodeLength function at /asn1/ber_encoder.c. This flaw could allow an attacker to execute arbitrary code or cause a denial of service.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS