CVE-2026-18583
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk40th percentile - higher than 40% of all known CVEs
Summary
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.
Risk Assessment
A remote attacker could exploit the out-of-bounds read to obtain sensitive data or destabilize systems using the libiec61850 library.
Recommendation
Immediately update libiec61850 to version 1.6.2, which includes the fix (patch name: 062062daf4cb50c7aa76e01d6fb4d58fc9278a7d).
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-2026-19206Medium
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.
- 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-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 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.