cvedb.io
CVE-2021-35533
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2021-11-26T17:15:07.743 · Last modified 2026-06-17T03:57:39.317

Summary

Improper Input Validation vulnerability in the APDU parser in the Bidirectional Communication Interface (BCI) IEC 60870-5-104 function of Hitachi Energy RTU500 series allows an attacker to cause the receiving RTU500 CMU of which the BCI is enabled to reboot when receiving a specially crafted message. By default, BCI IEC 60870-5-104 function is disabled (not configured). This issue affects: Hitachi Energy RTU500 series CMU Firmware version 12.0.* (all versions); CMU Firmware version 12.2.* (all versions); CMU Firmware version 12.4.* (all versions).

Affected products

hitachienergy — rtu500_firmware

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.