TI-2021-14264 Aliases CVE-2021-35533 GHSA-wv2v-prmm-j684

Specially Crafted IEC 60870-5-104 Packet Vulnerability in RTU500 series

LOW 35CWE-20Published 2021-11-26 · Updated 2024-09-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

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).

Why it matters now

EPSS 0.0095 61st percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Hitachi Energy	RTU500 series	CMU Firmware version 12.0 and later; CMU Firmware version 12.2 and later; CMU Firmware version 12.4 and later	—	No fix listed	CNA

RTU500 series VendorHitachi Energy Affected CMU Firmware version 12.0 and later; CMU Firmware version 12.2 and later; CMU Firmware version 12.4 and later Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:hitachienergy:rtu500_firmware:12.0:::::::*	12.0	Vulnerable	Hitachi Energy
cpe:2.3:o:hitachienergy:rtu500_firmware:12.2:::::::*	12.2	Vulnerable	Hitachi Energy
cpe:2.3:o:hitachienergy:rtu500_firmware:12.4:::::::*	12.4	Vulnerable	Hitachi Energy
cpe:2.3:h:hitachienergy:rtu500:-:::::::*	not specified by NVD	Running on	Hitachi Energy

cpe:2.3:o:hitachienergy:rtu500_firmware:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Hitachi Energy
cpe:2.3:o:hitachienergy:rtu500_firmware:12.2:*:*:*:*:*:*:* Versions 12.2 Vulnerable ·Hitachi Energy
cpe:2.3:o:hitachienergy:rtu500_firmware:12.4:*:*:*:*:*:*:* Versions 12.4 Vulnerable ·Hitachi Energy
cpe:2.3:h:hitachienergy:rtu500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Hitachi Energy

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-35533
2026-10-03 Alias added: GHSA-wv2v-prmm-j684

References

Advisory 1

https://search.abb.com/library/Download.aspx?DocumentID=8DBD000063&LanguageCode=en&DocumentPartId=&Action=Launch

TI-2022-03099 IEC 61850 MMS-Server Vulnerability in multiple Hitachi Energy Products CVSS 3.1HIGH 7.5
TI-2022-04211 Out-of-bounds write in Hitachi Energy RTU500 series CVSS 3.1HIGH 7.5
TI-2022-02312 Improper input validation in Hitachi Energy RTU500 series CVSS 3.1HIGH 7.5
TI-2021-08743 Specially Crafted IEC 61850 Protocol Sequence Vulnerability CVSS 3.1HIGH 7.5
TI-2022-11258 Specially Crafted Modbus TCP Packet Vulnerability in RTU500 series CVSS 3.1HIGH 7.5
TI-2023-06138 Buffer overflow in Hitachi Energy RTU500 series CMU Firmware CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences