VulnerabilityModified

CVE-2023-5768

A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below.

MEDIUM 6.1EPSS 0.41%

Does this matter?

Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.41% probability · 35th percentile
CISA KEV: Not listed
Weakness: CWE-79
Affected: hitachienergy/rtu520 firmware · hitachienergy/rtu530 firmware · hitachienergy/rtu540 firmware · hitachienergy/rtu560 firmware
Source: cybersecurity@hitachienergy.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.