What is CVE-2023-6711?

CVE-2023-6711 is a medium-severity vulnerability in Hitachi Energy Rtu500 Series Cmu Firmware, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.9/10. Published 2023-12-19.

How severe is CVE-2023-6711?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Buffer overflow in Hitachi Energy Rtu500 Series Cmu Firmware

CVE-2023-6711

Vulnerability exists in SCI IEC 60870-5-104 and HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Specially crafted messages sent to the mentioned components are not validated properly and can result in buffer overflow and as final consequence to a reboot of an RTU500 CMU.

Vulnerability class: Buffer Overflow

EPSS: 0.007 (48.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Hitachi Energy Rtu500 Series Cmu Firmware — versions 12.0.1, 12.2.1, 12.4.1
Hitachienergy Rtu500
Hitachienergy Rtu500_firmware — versions 13.5.1.0

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cybersecurity@hitachienergy.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2023-6711?: CVE-2023-6711 is a medium-severity vulnerability in Hitachi Energy Rtu500 Series Cmu Firmware, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.9/10. Published 2023-12-19.
How severe is CVE-2023-6711?: Medium severity. CVSS v3 base score is 5.9 out of 10.