CVE-2021-35533

High

Description

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).

SeverityHigh
CVSS7.5
Exploit probability—
ProductHitachienergy Rtu500 Firmware
PublishedNov 26, 2021
First seenNov 26, 2021

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
hitachienergy rtu500_firmware12.0, 12.2, 12.4—

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CVE-2021-35533 · Hitachienergy Rtu500 Firmware · Dark Radar