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**Name of the Vulnerable Software and Affected Versions** libiec61850 version 1.5 **Description** A heap overflow issue was discovered in the BerEncoder encodeLength function located at /asn1/ber encoder.c. This issue affects the libiec61850 library. **Recommendations** For libiec61850 version 1.5, consider restricting access to the BerEncoder encodeLength function until a patch is available. As a temporary workaround, avoid using the function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.