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Vulnerability · Published Dec 4, 2023 · Assigned by Hitachi Energy

CVE-2023-5768

Medium 5.9

In plain English

A medium-severity security flaw in RTU500 series from Hitachi Energy. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.4%top 64.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Incomplete or wrong received APDU frame layout may cause blocking on link layer. Error reason was an endless blocking when reading incoming frames on link layer with wrong length information of APDU or delayed reception of data octets. Only communication link of affected HCI IEC 60870-5-104 is blocked. If attack sequence stops the communication to the previously attacked link gets normal again.

Affected products (as reported)

VendorProductVersions
Hitachi Energy RTU500 series RTU500 series CMU Firmware version 12.0.1 – 12.0.14RTU500 series CMU Firmware version 12.2.1 – 12.2.11RTU500 series CMU Firmware version 12.4.1 – 12.4.11 RTU500 series CMU Firmware version 12.6.1 – 12.6.9 RTU500 series CMU Firmware version 12.7.1 – 12.7.6RTU500 series CMU Firmware version 13.2.1 – 13.2.6 RTU500 series CMU Firmware version 13.4.1 – 13.4.3

References